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airlines that fly to pittsburgh

Midwest Connect

Midwest Connect, the brand name for the regional airline service of Midwest Airlines, rather than a certificated airline carrier

website wikipedia

Midwest Airlines

Midwest Airlines (formerly Midwest Express), the U.S.-based airline and is now an operating brand of Republic Airways Holdings based in Oak Creek, Wisconsin. operating from Milwaukee's General Mitchell International Airport

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JetBlue Airways

jetBlue Airways Corporation, the American low-cost airline

website wikipedia

Northwest Airlines

Northwest Airlines, Inc. (often abbreviated NWA), the major United States airline founded in 1926 and absorbed into Delta Air Lines by a merger approved on October 29, 2008, making Delta the largest airline in the world

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Southwest Airlines, Inc.

Southwest Airlines Co., the American airline based in Dallas, Texas

website wikipedia

United Airlines

United Air Lines, Inc., doing business as United Airlines, the major airline based in the United States and one of the world's largest airlines with 48,000 employees and 360 aircraft

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Trans World Airlines

Trans World Airlines (TWA), the former second largest United States commercial airline and the main US competitor of Pan Am from 1946 until deregulation in the late 1970s

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Sun Country Airlines

MN Airlines, LLC, operating as Sun Country Airlines, the American low-cost airline headquartered in the Minneapolis-St. Paul suburb of Mendota Heights, Minnesota

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Air Canada Jazz

Jazz Air LP, also known as Air Canada Jazz, the Canadian regional airline based at Halifax Stanfield International Airport in Enfield and Halifax Regional Municipality, Nova Scotia, operated by Chorus Aviation

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Delta Airlines

Delta AirLines, Inc., the major airline based in the United States and headquartered in Atlanta, Georgia

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Allegiant Air

Allegiant Travel Company, the regional airlines business

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Air Wisconsin

Air Wisconsin Airlines Corporation, the airline based at Outagamie County Regional Airport in the town of Greenville, Wisconsin, United States, near Appleton

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Air Midwest

Air Midwest, Inc., the Federal Aviation Administration Part 121 certificated air carrier operating under air carrier certificate number AMWA510A issued on May 15, 1965

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American Airlines, Inc.

American Airlines, Inc. (AA), the world's fourth largest airline in passenger miles transported and operating revenues

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American Eagle Airlines

American Eagle Airlines, the brand name used by American Eagle Airlines, Inc., based in Fort Worth, Texas, and Executive Airlines based in San Juan, Puerto Rico, in the operation of passenger air service as regional affiliates of American Airlines

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Continental Express

Continental Express, the operating brand name used by a number of independently owned regional airlines providing regional jet feeder service under agreement with Continental Airlines

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Continental Airlines

Continental Airlines, the United States certificated air carrier

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WestJet

WestJet Airlines Ltd., the Canadian low-cost carrier that provides scheduled and charter air service to 68 destinations in Canada, the United States, Mexico and the Caribbean

website wikipedia

Delta Connection

Delta Connection (the name under which a number of individually owned regional airlines and three wholly owned regional carriers operate short and medium haul routes in association with Delta Air Lines Inc. )

show all (14 more) ...

List airlines (a business that provides scheduled or chartered flights for passengers or freight) each of which is an airline serving (flying to an airport near) the place Pittsburgh, the place in Allegheny County, Pennsylvania, USA

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Analyse this question

▶ How do we know?

Facts

Show reasoning

I followed this chain of reasoning:

By calculation (generator: ["now@trueknowledge.com"]) I know that:
The current time is February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Pittsburgh International Airport is an airport for Pittsburgh, Pennsylvania ([fact: ["371948759@trueknowledge.com"]])

Fact 1: American Airlines, Inc. is an airline serving the airport Pittsburgh International Airport ([fact: ["367406511@trueknowledge.com"]])

Fact 1 is true for May 4th 2010, 17:06:21 onwards ([fact: ["799148940@trueknowledge.com"]])

Fact 1 is true for June 13th 2009, 00:00:00 onwards ([fact: ["367406515@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: American Airlines, Inc. is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 4th 2010, 17:06:21 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2 is true for June 13th 2009, 00:00:00 onwards

I know from locally stored knowledge that:
Fact 3: United Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["367407495@trueknowledge.com"]])

Fact 3 is true for June 13th 2009, 00:00:00 onwards ([fact: ["367407499@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: United Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for June 13th 2009, 00:00:00 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 5: Delta Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["367410367@trueknowledge.com"]])

Fact 5 is true for May 5th 2010, 09:40:52 onwards ([fact: ["800022972@trueknowledge.com"]])

Fact 5 is true for June 13th 2009, 00:00:00 onwards ([fact: ["367410371@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Delta Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 09:40:52 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2 is true for June 13th 2009, 00:00:00 onwards

I know from locally stored knowledge that:
Fact 7: Northwest Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["367411943@trueknowledge.com"]])

Fact 7 is true for June 13th 2009, 00:00:00 onwards ([fact: ["367411947@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Northwest Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for June 13th 2009, 00:00:00 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 9: Southwest Airlines, Inc. is an airline serving the airport Pittsburgh International Airport ([fact: ["367412519@trueknowledge.com"]])

Fact 9 is true for May 5th 2010, 10:38:37 onwards ([fact: ["800072080@trueknowledge.com"]])

Fact 9 is true for June 13th 2009, 00:00:00 onwards ([fact: ["367412523@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Southwest Airlines, Inc. is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 10:38:37 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2 is true for June 13th 2009, 00:00:00 onwards

I know from locally stored knowledge that:
Fact 11: Air Canada Jazz is an airline serving the airport Pittsburgh International Airport ([fact: ["799127036@trueknowledge.com"]])

Fact 11 is true for May 4th 2010, 16:54:55 onwards ([fact: ["799127056@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Air Canada Jazz is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 4th 2010, 16:54:55 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 13: Air Midwest is an airline serving the airport Pittsburgh International Airport ([fact: ["799135668@trueknowledge.com"]])

Fact 13 is true for May 4th 2010, 16:59:06 onwards ([fact: ["799135676@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Air Midwest is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 4th 2010, 16:59:06 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 15: Air Wisconsin is an airline serving the airport Pittsburgh International Airport ([fact: ["799140960@trueknowledge.com"]])

Fact 15 is true for May 4th 2010, 17:01:37 onwards ([fact: ["799140964@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Air Wisconsin is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 4th 2010, 17:01:37 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 17: American Eagle Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["799150784@trueknowledge.com"]])

Fact 17 is true for May 4th 2010, 17:07:18 onwards ([fact: ["799150792@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: American Eagle Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 4th 2010, 17:07:18 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 19: Continental Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["800018872@trueknowledge.com"]])

Fact 19 is true for May 5th 2010, 08:14:14 onwards ([fact: ["800018876@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Continental Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 08:14:14 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 21: Continental Express is an airline serving the airport Pittsburgh International Airport ([fact: ["800019920@trueknowledge.com"]])

Fact 21 is true for May 5th 2010, 08:15:13 onwards ([fact: ["800019928@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Continental Express is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 08:15:13 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 23: Delta Connection is an airline serving the airport Pittsburgh International Airport ([fact: ["800024480@trueknowledge.com"]])

Fact 23 is true for May 5th 2010, 09:42:24 onwards ([fact: ["800024484@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Delta Connection is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 09:42:24 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 25: JetBlue Airways is an airline serving the airport Pittsburgh International Airport ([fact: ["800043184@trueknowledge.com"]])

Fact 25 is true for May 5th 2010, 10:02:37 onwards ([fact: ["800043200@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: JetBlue Airways is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 10:02:37 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 27: Midwest Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["800055320@trueknowledge.com"]])

Fact 27 is true for May 5th 2010, 10:19:10 onwards ([fact: ["800055324@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Midwest Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 10:19:10 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 29: Midwest Connect is an airline serving the airport Pittsburgh International Airport ([fact: ["800055492@trueknowledge.com"]])

Fact 29 is true for May 5th 2010, 10:19:24 onwards ([fact: ["800055500@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Midwest Connect is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 10:19:24 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Fact 31: Trans World Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["800161228@trueknowledge.com"]])

Fact 31 is true for May 5th 2010, 16:54:17 onwards ([fact: ["800161232@trueknowledge.com"]])

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Trans World Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 16:54:17 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
is an airport for is a more general form of is the most important airport serving ([fact: ["1493268602@trueknowledge.com"]])

permanent applies to is an airport for ([fact: ["127368729@trueknowledge.com"]])

Pittsburgh, Pennsylvania is a settlement ([fact: ["9134981@trueknowledge.com"]])

40°26'26"N is the latitude of Pittsburgh, Pennsylvania ([fact: ["9134987@trueknowledge.com"]])

79°59'45"W is the longitude of Pittsburgh, Pennsylvania ([fact: ["161120797@trueknowledge.com"]])

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:
40°26'26"N and 79°59'45"W is strictly equal to 40°26'26"N and 79°59'45"W

By calculation (generator: ["lat_long_to_c-square@trueknowledge.com"]) I know that:
[c-square: ["7407:209:249:249:205:458:353:363"]] is the c-square version of the co-ordinates 40°26'26"N and 79°59'45"W

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:
100 kilometres is strictly equal to 100 kilometres

By calculation (generator: ["first_parameter@trueknowledge.com"]) I know that:
[c-square: ["7407:209:249:249:205:458:353:363"]] is the first parameter of [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

By calculation (generator: ["second_parameter@trueknowledge.com"]) I know that:
100 kilometres is the second parameter of [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

kilometre is the second parameter of 100 kilometres

I know from locally stored knowledge that:
Fact 33: 1 is the multiplier that converts kilometre and kilometre ([fact: ["684486512@trueknowledge.com"]])

Fact 33 is true for all time ([fact: ["689997328@trueknowledge.com"]])

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 33 is true at February 14th 2012, 04:20:17

By calculation (generator: ["first_parameter@trueknowledge.com"]) I know that:
100 is the first parameter of 100 kilometres

By calculation (generator: ["product@trueknowledge.com"]) I know that:
100 is the product of 1 and 100

By calculation (generator: ["class_parametered_object@trueknowledge.com"]) I know that:
length is the class of the parametered object 100 kilometres

By calculation (generator: ["parametered_object_corresponding_to@trueknowledge.com"]) I know that:
100 kilometres is the parametered object corresponding to length and 100 and kilometre

By calculation (generator: ["equivalent_to6@trueknowledge.com"]) I know that:
Fact 34: 100 kilometres is equivalent to 100 kilometres

Fact 34 is true at February 14th 2012, 04:20:17

Fact 34: kilometre is the unit used in 100 kilometres

By calculation (generator: ["covering_a_disc_with_c-squares@trueknowledge.com"]) I know that:
[c-square: ["7307:499"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7308:390"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7407:209"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7407:219"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7408:100"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7307:498"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7308:391"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7407:208"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7407:218"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7408:101"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7408:110"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

[c-square: ["7408:111"]] is a c-square to test for the point and distance [c-square: ["7407:209:249:249:205:458:353:363"]] and 100 kilometres

I know from locally stored knowledge that:
Air Midwest is an airline serving the airport Venango Regional Airport ([fact: ["799135732@trueknowledge.com"]])

ATA Airlines is an airline serving the airport Pittsburgh International Airport ([fact: ["790577028@trueknowledge.com"]])

Trans World Airlines is an airline serving the airport Zanesville Municipal Airport ([fact: ["800161796@trueknowledge.com"]])

Air Midwest is an airline serving the airport DuBois Regional Airport ([fact: ["799135396@trueknowledge.com"]])

Fact 35: Allegiant Air is an airline serving the airport Youngstown-Warren Regional Airport ([fact: ["799147620@trueknowledge.com"]])

Fact 35 is true for May 4th 2010, 17:04:59 onwards ([fact: ["799147624@trueknowledge.com"]])

United Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["367407439@trueknowledge.com"]])

Delta Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["367410319@trueknowledge.com"]])

Continental Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["367410887@trueknowledge.com"]])

Northwest Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["367411895@trueknowledge.com"]])

Southwest Airlines, Inc. is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["367412471@trueknowledge.com"]])

Air Canada Jazz is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["799126460@trueknowledge.com"]])

Air Wisconsin is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["799140488@trueknowledge.com"]])

American Eagle Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["799150076@trueknowledge.com"]])

Continental Express is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["800019512@trueknowledge.com"]])

Delta Connection is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["800023552@trueknowledge.com"]])

Midwest Connect is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["800055400@trueknowledge.com"]])

Fact 36: Sun Country Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["800073564@trueknowledge.com"]])

Fact 36 is true for May 5th 2010, 10:40:12 onwards ([fact: ["800073568@trueknowledge.com"]])

Trans World Airlines is an airline serving the airport Cleveland Hopkins International Airport ([fact: ["800160732@trueknowledge.com"]])

By calculation (generator: ["airport_serving@trueknowledge.com"]) I know that:
Venango Regional Airport is the most important airport serving Pittsburgh, Pennsylvania

Pittsburgh International Airport is the most important airport serving Pittsburgh, Pennsylvania

Zanesville Municipal Airport is the most important airport serving Pittsburgh, Pennsylvania

DuBois Regional Airport is the most important airport serving Pittsburgh, Pennsylvania

Youngstown-Warren Regional Airport is the most important airport serving Pittsburgh, Pennsylvania

Cleveland Hopkins International Airport is the most important airport serving Pittsburgh, Pennsylvania

By calculation (generator: ["moregeneral4@trueknowledge.com"]) I know that:
Cleveland Hopkins International Airport is an airport for Pittsburgh, Pennsylvania

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Sun Country Airlines is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 10:40:12 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I know from locally stored knowledge that:
Cleveland Hopkins International Airport is in Cleveland ([fact: ["670834316@trueknowledge.com"]])

Cleveland is a settlement ([fact: ["8331475@trueknowledge.com"]])

41°28'55"N is the latitude of Cleveland ([fact: ["368049159@trueknowledge.com"]])

81°40'10"W is the longitude of Cleveland ([fact: ["368049163@trueknowledge.com"]])

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:
41°28'55"N and 81°40'10"W is strictly equal to 41°28'55"N and 81°40'10"W

By calculation (generator: ["lat_long_to_c-square@trueknowledge.com"]) I know that:
[c-square: ["7408:111:246:486:219:394:144:144"]] is the c-square version of the co-ordinates 41°28'55"N and 81°40'10"W

By calculation (generator: ["first_parameter@trueknowledge.com"]) I know that:
[c-square: ["7408:111:246:486:219:394:144:144"]] is the first parameter of [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

By calculation (generator: ["second_parameter@trueknowledge.com"]) I know that:
100 kilometres is the second parameter of [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

By calculation (generator: ["covering_a_disc_with_c-squares@trueknowledge.com"]) I know that:
[c-square: ["7408:101"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:110"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:111"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:112"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:121"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:100:4"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:102:3"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:120:2"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:122:1"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:100:3"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:102:4"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:120:1"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

[c-square: ["7408:122:2"]] is a c-square to test for the point and distance [c-square: ["7408:111:246:486:219:394:144:144"]] and 100 kilometres

I know from locally stored knowledge that:
Trans World Airlines is an airline serving the airport Mansfield Lahm Regional Airport ([fact: ["800161028@trueknowledge.com"]])

Air Wisconsin is an airline serving the airport Erie International Airport ([fact: ["799140368@trueknowledge.com"]])

Continental Express is an airline serving the airport Erie International Airport ([fact: ["800019360@trueknowledge.com"]])

Delta Connection is an airline serving the airport Erie International Airport ([fact: ["800023704@trueknowledge.com"]])

Air Canada Jazz is an airline serving the airport Windsor Airport ([fact: ["799127464@trueknowledge.com"]])

Fact 38: WestJet is an airline serving the airport Windsor Airport ([fact: ["800167448@trueknowledge.com"]])

Fact 38 is true for May 5th 2010, 17:03:05 onwards ([fact: ["800167452@trueknowledge.com"]])

By calculation (generator: ["airport_serving@trueknowledge.com"]) I know that:
Youngstown-Warren Regional Airport is the most important airport serving Cleveland

Cleveland Hopkins International Airport is the most important airport serving Cleveland

Mansfield Lahm Regional Airport is the most important airport serving Cleveland

Erie International Airport is the most important airport serving Cleveland

Windsor Airport is the most important airport serving Cleveland

By calculation (generator: ["airport_serving_last_resort@trueknowledge.com"]) I know that:
Windsor Airport is the most important airport serving Cleveland Hopkins International Airport

By calculation (generator: ["moregeneral4@trueknowledge.com"]) I know that:
Windsor Airport is an airport for Cleveland Hopkins International Airport

By calculation (generator: ["airline_serving_airport@trueknowledge.com"]) I know that:
Fact 39: WestJet is an airline serving the airport Cleveland Hopkins International Airport

Fact 39 is true for May 5th 2010, 17:03:05 onwards

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: WestJet is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 5th 2010, 17:03:05 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

By calculation (generator: ["moregeneral4@trueknowledge.com"]) I know that:
Youngstown-Warren Regional Airport is an airport for Pittsburgh, Pennsylvania

By calculation (generator: ["airline_serving_place@trueknowledge.com"]) I know that:
Fact 2: Allegiant Air is an airline serving the place Pittsburgh, Pennsylvania

Fact 2 is true for May 4th 2010, 17:04:59 onwards

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 2 is true at February 14th 2012, 04:20:17

I used the following facts to provide this answer:

Pittsburgh International Airport is an airport for Pittsburgh, Pennsylvania

agree disagree edit

American Airlines, Inc. has been an airline serving the airport Pittsburgh International Airport since at least May 4th 2010, 17:06:21

agree disagree edit

American Airlines, Inc. has been an airline serving the airport Pittsburgh International Airport since at least June 13th 2009, 00:00:00

agree disagree edit

United Airlines has been an airline serving the airport Pittsburgh International Airport since at least June 13th 2009, 00:00:00

agree disagree edit

Delta Airlines has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 09:40:52

agree disagree edit

Delta Airlines has been an airline serving the airport Pittsburgh International Airport since at least June 13th 2009, 00:00:00

agree disagree edit

Northwest Airlines has been an airline serving the airport Pittsburgh International Airport since at least June 13th 2009, 00:00:00

agree disagree edit

Southwest Airlines, Inc. has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 10:38:37

agree disagree edit

Southwest Airlines, Inc. has been an airline serving the airport Pittsburgh International Airport since at least June 13th 2009, 00:00:00

agree disagree edit

Air Canada Jazz has been an airline serving the airport Pittsburgh International Airport since at least May 4th 2010, 16:54:55

agree disagree edit

Air Midwest has been an airline serving the airport Pittsburgh International Airport since at least May 4th 2010, 16:59:06

agree disagree edit

Air Wisconsin has been an airline serving the airport Pittsburgh International Airport since at least May 4th 2010, 17:01:37

agree disagree edit

American Eagle Airlines has been an airline serving the airport Pittsburgh International Airport since at least May 4th 2010, 17:07:18

agree disagree edit

Continental Airlines has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 08:14:14

agree disagree edit

Continental Express has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 08:15:13

agree disagree edit

Delta Connection has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 09:42:24

agree disagree edit

JetBlue Airways has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 10:02:37

agree disagree edit

Midwest Airlines has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 10:19:10

agree disagree edit

Midwest Connect has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 10:19:24

agree disagree edit

Trans World Airlines has been an airline serving the airport Pittsburgh International Airport since at least May 5th 2010, 16:54:17

agree disagree edit

'is an airport for' is a more general form of 'is the most important airport serving'

agree disagree edit

'is an airport for' is permanent

agree disagree edit

Pittsburgh, Pennsylvania is a settlement

agree disagree edit

40°26'26"N is the latitude of Pittsburgh, Pennsylvania

agree disagree edit

79°59'45"W is the longitude of Pittsburgh, Pennsylvania

agree disagree edit

1 has always been the multiplier that converts kilometre and kilometre and will be forever

agree disagree edit

Air Midwest is or has been an airline serving the airport Venango Regional Airport

agree disagree edit

ATA Airlines is or has been an airline serving the airport Pittsburgh International Airport

agree disagree edit

Trans World Airlines is or has been an airline serving the airport Zanesville Municipal Airport

agree disagree edit

Air Midwest is or has been an airline serving the airport DuBois Regional Airport

agree disagree edit

Allegiant Air has been an airline serving the airport Youngstown-Warren Regional Airport since at least May 4th 2010, 17:04:59

agree disagree edit

United Airlines is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Delta Airlines is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Continental Airlines is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Northwest Airlines is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Southwest Airlines, Inc. is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Air Canada Jazz is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Air Wisconsin is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

American Eagle Airlines is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Continental Express is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Delta Connection is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Midwest Connect is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Sun Country Airlines has been an airline serving the airport Cleveland Hopkins International Airport since at least May 5th 2010, 10:40:12

agree disagree edit

Trans World Airlines is or has been an airline serving the airport Cleveland Hopkins International Airport

agree disagree edit

Cleveland Hopkins International Airport is or has been in Cleveland

agree disagree edit

Cleveland is a settlement

agree disagree edit

41°28'55"N is the latitude of Cleveland

agree disagree edit

81°40'10"W is the longitude of Cleveland

agree disagree edit

Trans World Airlines is or has been an airline serving the airport Mansfield Lahm Regional Airport

agree disagree edit

Air Wisconsin is or has been an airline serving the airport Erie International Airport

agree disagree edit

Continental Express is or has been an airline serving the airport Erie International Airport

agree disagree edit

Delta Connection is or has been an airline serving the airport Erie International Airport

agree disagree edit

Air Canada Jazz is or has been an airline serving the airport Windsor Airport

agree disagree edit

WestJet has been an airline serving the airport Windsor Airport since at least May 5th 2010, 17:03:05

agree disagree edit

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External web pages (using standard web search):

PIT - Flight Information : Airlines

www.FlyPittsburgh.com is the official website of the Allegheny County Airport Authority, operator of both Pittsburgh International Airport (PIT) and Allegheny County Airport (AGC).

http://www.flypittsburgh.com/airlines

Pittsburgh Airlines - Airlines that Serve Pittsburgh International ...

Find flight schedules, fares, special offers, routes, and more for the major airlines which fly in and out of Pittsburgh International Airport.

http://pittsburgh.about.com/od/airlines/Pittsburgh_Airlines.htm

Welcome to Pittsburgh International Airport

... the official website of the Allegheny County Airport Authority, operator of both Pittsburgh ... Airlines; Airport Tracker; Current Airport Delays; Fare Savers / EFares Signup

http://flypittsburgh.com/

Airlines that fly to Pittsburgh Int'l Apt.

Airlines with flights to Pittsburgh Int'l Apt. listed at Skyscanner. The fastest way to find the cheapest low cost airline prices. Accurate information for budget, last minute ...

http://www.skyscanner.net/flights-to/pit/airlines-that-fly-to-pittsburgh...

Airlines prepare to 'fly together'

LOS ANGELES -- Continental Airlines serves Angus cheeseburgers on its flights. United Air Lines doesn't even have the right ovens to heat them. United boards passengers in ...

http://www.pittsburghlive.com/x/pittsburghtrib/business/s_770687.html

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