TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: What is the second largest of the Balearic Islands ?

SOLUTION: balearic islands

PROBLEM: Which popular Doctor Who villains, it was revealed in 2011, are to be given 'a rest' by scriptwriters?

SOLUTION: doctor who

PROBLEM: The Butter Battle Book by Dr. Seuss was a commentary on what real-life war?

SOLUTION:
the butter battle book