TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who directed the film `Back To The Future`?

SOLUTION: back to the future

PROBLEM: Which English comedian has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?

SOLUTION: britain's got talent

PROBLEM: Which member of The A Team played Clubber Lang in Rocky III?

SOLUTION:
the a-team