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

[Q]: What is the capital city of Colombia?
[A]: colombia


[Q]: Who wrote the novels About A Boy, How To Be Good and High Fidelity?
[A]: how to be good


[Q]: The TV series 'Angel' is-a spin off from which other?
[A]:
angel