TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: The French wine growing areas of Macon, Beaujolais and Chablis are in which region?

SOLUTION: macon

PROBLEM: What currency is used on Christmas Island?

SOLUTION: christmas island

PROBLEM: Which band had a number one hit with `Barbie Girl`?

SOLUTION:
barbie girl