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 Q]: Category: U.S. GEOGRAPHY 
Clue: In 1937 the government set aside this Georgia swamp as a national wildlife refuge
[EX A]: okefenokee swamp

[EX Q]: Category: THE TITLE ESCAPES ME 
Clue: 3 chimpanzees travel through time to 20th century Earth in the 1971 sequel "Escape From" this place
[EX A]: the planet of the apes

[EX Q]: Category: "S"CIENCE 
Clue: This 2-word barrier keeps many prion diseases from passing from 4-legged animals to humans
[EX A]:
the species barrier