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.

Ex Input:
Category: FRANKS 
Clue: The Atreides family, exiled on Arrakis, starred in the "Chronicles of Dune" by this sci-fi author

Ex Output:
frank herbert


Ex Input:
Category: LETTER PERFECT 
Clue: 1st initial of a Hoover & middle initial of a Foyt

Ex Output:
j


Ex Input:
Category: IT HAPPENED IN THE PAST 
Clue: On Feb. 10, 1985 this African man said, "Only free men can negotiate; prisoners cannot enter into contracts"

Ex Output:

nelson mandela