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

[EX Q]: Brenda Mae Tarpley achieved fame under what name?
[EX A]: brenda mae tarpley

[EX Q]: Eden Park staged some of the 2011 Rugby World Cup matches, in which city can it be found?
[EX A]: eden park

[EX Q]: In which war was the Battle of Shiloh?
[EX A]:
battle of shiloh