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

[EX Q]: Who composed Air on the G String?
[EX A]: air on the g string

[EX Q]: Which exponent of Brit Art created works involving a bed, a tent and a beach hut?
[EX A]: young british artists

[EX Q]: Which branch of science has four fundamental principles: addition, subtraction, multiplication, and division.?
[EX A]:
division