TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: With which other cricketer does James Anderson hold the England record for the most successful bowler/wicket keeper combination with 68 wickets?

SOLUTION: cricket

PROBLEM: Ride of the Valkyries is the official quick march of which branch of the British Army?

SOLUTION: british army

PROBLEM: Who wrote the book Das Kapital?

SOLUTION:
capital: critique of political economy