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

[EX Q]: Charles Bingley was a character in what classic Jane Austen novel?
[EX A]: charles bingley

[EX Q]: Who had a hit album in 2010 with Can't Be Tamed?
[EX A]: can't be tamed

[EX Q]: On 4 June 2008 the International Olympic Committee announced that the finalists to host the 2016 Olympics were Chicago, Tokyo, Madrid and which other venue?
[EX A]:
2016 summer olympics