Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

[Q]: The town of Anthony in which US state was known as 'The Leap Year Capital of the World'?
[A]: united states

[Q]: What is the main river of Brazil?
[A]: brazil

[Q]: In which country will the 2010 Winter Olympic Games be held?
[A]:
2010 winter olympics