TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Ewart was the middle name of which British Prime Minister?

SOLUTION: prime minister of the united kingdom

PROBLEM: Where is Charles Darwin buried?

SOLUTION: charles darwin

PROBLEM: Who wrote the song Crazy, made famous by Patsy Cline?

SOLUTION:
crazy