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.

[Q]: Category: AROUND THE U.S.A. 
Clue: Any Texan can tell you that this city is "Big D"
[A]: dallas


[Q]: Category: DECEMBER 1st 
Clue: 1959: 12 countries including the U.S. & the U.S.S.R. sign a treaty to keep this continent a scientific preserve
[A]: antarctica


[Q]: Category: FLAGS 
Clue: Oliver Hazard Perry's flag featured the words "Don't Give Up" this
[A]:
the ship