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 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: Will you still be sending me a valentine is a line from which Beatles song?

SOLUTION: the beatles

PROBLEM: Who created the Piet in St Peter's Basilica, the Doni Tondo in the Uffizi Gallery, and the sequence of poems written to Tommaso dei Cavalieri?

SOLUTION:
doni tondo