TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Eden Park staged some of the 2011 Rugby World Cup matches, in which city can it be found?

SOLUTION: eden park

PROBLEM: Which Dickens novel is subtitled The Parish Boy's Progress?

SOLUTION: charles dickens

PROBLEM: What was the name of the comic strip that featured Charlie Brown and Snoopy?

SOLUTION:
charlie brown