instruction:
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.
question:
Category: HISTORIC QUOTES 
Clue: This great Prussian king is credited with saying, "An army, like a serpent, travels on its belly"
answer:
frederick the great


question:
Category: I WROTE THAT! 
Clue: "Ottsy i Deti", aka "Fathers and Sons"
answer:
ivan turgenev


question:
Category: MAKEUP 
Clue: French for "red", L'Oreal makes a "Virtuale" version of it
answer:

rouge