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

[EX Q]: In which city was Christopher Columbus born?
[EX A]: columbus

[EX Q]: What breed of dog is Marmaduke in the newspaper cartoon strip of that name?
[EX A]: dog

[EX Q]: Actress Brooke Shields was married to whom for 2 years from April 1997?
[EX A]:
brooke shields