TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: I which European city will you find 'Dam Square'?

SOLUTION: dam square

PROBLEM: Making his debut for Sunderland last season, who is the only footballer from Benin ever to play in the Premier League?

SOLUTION: sunderland

PROBLEM: In which Charles Dickens novel does the character Mr M Choakumchild appear?

SOLUTION:
charles dickens