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.

Ex Input:
Category: U.S. RIVERS 
Clue: The Falls of Saint Anthony stop this mighty river from being navigable north of St. Paul, Minnesota

Ex Output:
the mississippi


Ex Input:
Category: FEMINISM 
Clue: Co, Po & Na are proposed alternatives to this male pronoun traditionally used when gender is unknown

Ex Output:
he


Ex Input:
Category: ROYALTY 
Clue: Machiavelli was a big fan of this king of Aragon born in 1452

Ex Output:

ferdinand