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

[Q]: Although it was headquartered at Oak Ridge, TN, and the University of Chicago, what was the name of the WWII project that created the atomic bomb?
[A]: nuclear weapon


[Q]: Angel Clare is a character in which novel by Thomas Hardy?
[A]: angel clare


[Q]: Which US state has Des Moines as its capital?
[A]:
des moines, iowa