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: 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
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Q: Category: WE'RE NO. 1 
Clue: Nicaragua was the first country to ratify this charter in 1945; the U.S. took another 3 weeks

A: u.n. charter
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Q: Category: MYTHOLOGY 
Clue: This Roman goddess of wisdom is said to have leaped forth from the brain of Jupiter, fully mature & in armor

A:
minerva
****