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: What city was the capital of the Confederacy for most of the Civil War?

SOLUTION: confederate states of america

PROBLEM: The Stanley Cup, for which various USA and Canada clubs compete and said to be the oldest sports trophy in N America, is awarded in which sport?

SOLUTION:
canada