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

[EX Q]: Which city has sports teams known as the 'Maple Leafs' and the 'Blue Jays'?
[EX A]: toronto blue jays

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

[EX Q]: What was the name of the group formed by Paul Simon and Art Garfunkel in 1957?
[EX A]:
art garfunkel