instruction:
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 consistency, answers should be in all lower cased letters.
question:
Category: FIREFIGHTING
Clue: Early NYC firemen were alerted with rattles--so you might have a 3-rattle fire where today we'd have this equivalent
answer:
a 3-alarm fire

question:
Category: THE ROARING '20s
Clue: The American Chronicle says that in 1924 half a million people wrote this Michigander asking for money
answer:
henry ford

question:
Category: STAR MOVIES
Clue: The boundary of a black hole, this "horizon" was the title of a 1997 Laurence Fishburne flick
answer:
event horizon