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: WORLD HISTORY 
Clue: He completed vols. 2 & 3 of Karl Marx's "Das Kapital"
answer:
friedrich engels


question:
Category: MYTHOLOGY 
Clue: This Greek mountain was the home of the gods
answer:
mount olympus


question:
Category: I GOT THE MUSIC IN ME 
Clue: To see John Lennon's Sgt. Pepper costume, head to this Ohio establishment
answer:

the rock & roll hall of fame