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

[EX Q]: Which singer provides the voice for Chef in South Park?
[EX A]: chef

[EX Q]: What name is given to the disease whereby parasites can change the behaviour of rats and mice, making them drawn to rather than fearful of the scent of cats?
[EX A]: cat

[EX Q]: With whom did Ashanti have a 2002 No.1 single?
[EX A]:
ashanti