TASK DEFINITION: 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 simplicity, answers should be in all lower cased letters.
PROBLEM: Category: DIAMONDS ARE FOREVER 
Clue: Though guiltless, this French queen fell even more out of favor after the 1785 Affair of the Diamond Necklace

SOLUTION: marie antoinette

PROBLEM: Category: ALL ABOUT RIVERS 
Clue: You may be waiting for the Robert E. Lee on a natural one of these raised river banks created by flood waters

SOLUTION: levee

PROBLEM: Category: PHILOSOPHIC IDEAS 
Clue: David Hume held this view, that sense & experience are the sole foundation of knowledge

SOLUTION:
empiricism