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

[Q]: Which horse won the 2009 Epsom Derby?
[A]: 2009 epsom derby


[Q]: Zoey Barkow, Kevin Peyton, Eddie Walzer and Fitch Cooper are all characters in which US television series?
[A]: merritt wever


[Q]: What links the US, 2 May 2011 and Abottabad in Pakistan?
[A]:
abbottabad