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]: Abyssinian, British Longhair and German Rex are all breeds of what?
[EX A]: british longhair

[EX Q]: Which actor was the first director of the National Theatre ?
[EX A]:
actor