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: FILTHY RICH 
Clue: Worth over $15 billion, Robson, son of Sam, runs this company, the USA's largest private employer
[A]: wal-mart


[Q]: Category: WANNA BET? 
Clue: In this game a don't pass bet is a wager against the shooter
[A]: craps


[Q]: Category: BESTSELLERS 
Clue: Artistic clues help reveal the secret location of the Holy Grail in this thriller by Dan Brown
[A]:
the da vinci code