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 future Nobel Prize winner did Bill Clinton choose as his Vice President?

SOLUTION: vice president of the united states

PROBLEM: Who succeeded Jon Pertwee as Doctor Who?

SOLUTION: doctor who

PROBLEM: Which 1984 Bruce Springsteen album features the songs 'Dancing In The Dark', 'Glory Days' and 'My Hometown'?

SOLUTION:
my hometown