TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which Dickens novel is subtitled The Parish Boy's Progress?

SOLUTION: charles dickens

PROBLEM: Who was the CBS News anchor-man known as 'the man Americans most trust'?

SOLUTION: news presenter

PROBLEM: Cartman is a character on what TV show?

SOLUTION:
eric cartman