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 Q]: Category: A CAST OF THOUSANDS 
Clue: It's what you're trying to catch when you're fly-casting
[EX A]: fish

[EX Q]: Category: HOLLYWOOD 
Clue: The man seen here didn't wear an undershirt in this 1934 film, setting a trend for decades
[EX A]: it happened one night

[EX Q]: Category: VENEZUELA VITALS 
Clue: At 5,200 square miles, it's the largest lake in Venezuela & in all of South America
[EX A]:
lake maracaibo