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 comedian starred in the ABC sitcom Chicken Soup?

SOLUTION: chicken soup

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

SOLUTION: vice president of the united states

PROBLEM: What was the job of Chesley B Sullenberger III that made him famous on 15 January 2009?

SOLUTION:
chesley sullenberger