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.
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Question: Category: WANNA BET? 
Clue: In the '50s, Edward Thorp fed millions of hands of this game into a computer which figured out how to win at it

Answer: blackjack


Question: Category: BUSINESS & INDUSTRY 
Clue: This package delivery firm was founded in 1907 as the American Messenger Company

Answer: ups


Question: Category: THE NEW $20 BILL 
Clue: This building on the back of the bill was trashed by revelers the night the man on the front moved in

Answer:
the white house