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the group of objects: G Flat, a pitch with a frequency evenly divisible by 23.124 Hz and Mycobacterium tuberculosis (a species of gram-positive, aerobic bacteria that produces tuberculosis in humans, other primates, cattle; dogs; and some other animals which have contact with humans)
G Flat and tuberculosis is an instance of the following classes (explain):
The principal class of G Flat and tuberculosis is "group".
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