You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: PRESIDENTS
Clue: 2 of the 3 successive presidents who were Republicans, born in Ohio & generals in the Union army
[A]: ulysses s. grant, rutherford b. hayes & james a. garfield

[Q]: Category: MUSIC HISTORY
Clue: In this building Ella Fitzgerald & Sarah Vaughan both won amateur talent contests, one in 1934 & the other in 1942
[A]: the apollo theater

[Q]: Category: INVENTORS
Clue: A key to Alexander Graham Bell's experiments was one of these, procured by a doctor friend, Clarence Blake
[A]:
an ear