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.

Category: ANIMALS 
Clue: Buckskin was originally made from the mule & white-tailed species of this ungulate
deer

Category: EPITAPHS 
Clue: "Truth and history.  21 men.  The boy bandit king -- he died as he had lived"
billy the kid

Category: I NEED A VACATION 
Clue: I'll have to go to this country, the No. 7 destination, on Sunday to see a famous choir at the Imperial Palace chapel

austria