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

[EX Q]: Manchild and Buffalo Stance were hits for which singer?
[EX A]: manchild

[EX Q]: Harry, Tom, Dougie and Danny are collectively known as who in the pop world?
[EX A]: dougie poynter

[EX Q]: Which analgesic drug, first isolated in 1804, was named after the Greek god of dreams ?
[EX A]:
analgesic