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.

[Q]: 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
[A]: a 3-alarm fire


[Q]: Category: SCIENCE GRAB BAG 
Clue: A material called URhGe can be manipulated into being this, lacking electrical resistance
[A]: superconductors


[Q]: Category: FILMS OF THE '60s 
Clue: This singer did it his way & filmed his directorial debut, the WWII drama "None But the Brave", on the island of Kauai
[A]:
frank sinatra