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

[Q]: Grace Anna Goodhue was the wife of which US President?
[A]: grace coolidge


[Q]: The Trinity test site, outside of Alamogordo, NM, saw the first test of the atomic bomb on July 16, 1945. Headed by J. Robert Oppenheimer, what was the name of the project that developed the bomb?
[A]: j. robert oppenheimer


[Q]: Who wrote 'Imajica', 'Coldheart Canyon' and 'Galilee'?
[A]:
coldheart canyon