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

[Q]: Charles Bingley was a character in what classic Jane Austen novel?
[A]: charles bingley


[Q]: Dora Maar au Chat and The Weeping Woman are both portraits by which artist of his lover?
[A]: dora maar au chat


[Q]: What type of musical instrument is a Burns Bison?
[A]:
bison