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

[EX Q]: Which English king was married to Eleanor of Castile?
[EX A]: eleanor of castile

[EX Q]: What did Banting and Best discover in 1921?
[EX A]: charles herbert best

[EX Q]: Who, before being awarded the Nobel Prize in Literature for 2003, was the first author to be awarded the Booker Prize twice?
[EX A]:
man booker prize