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

Ex Input:
Who directed the 2005 film 'Brokeback Mountain'?

Ex Output:
brokeback mountain


Ex Input:
What is the only nation state of the Commonwealth of Nations on the mainland of South America?

Ex Output:
commonwealth of nations


Ex Input:
Chinese Democracy was the long awaited 2008 album release of which band?

Ex Output:

chinese democracy