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: INVESTING WITH WARREN BUFFETT 
Clue: Buffett calls the purchase of this insurance company one of his best investments; he first bought its stock in 1951
[A]: geico


[Q]: Category: SNOWY SONGS 
Clue: He "looked out on the feast of Stephen, when the snow lay round about, deep and crisp and even"
[A]: good king wenceslas


[Q]: Category: UNSOLVED MYSTERIES 
Clue: The last prophecy from the Virgin Mary's appearance in this Portuguese town remains a papal secret
[A]:
fatima