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

[EX Q]: Who in the 1930's wrote the novel 'Cakes And Ale'?
[EX A]: cakes and ale

[EX Q]: What book was written by Alexandre Dumas about Edmond Dantes' imprisonment in the Chateau d'If?
[EX A]: alexandre dumas

[EX Q]: What chemical element is a pure diamond?
[EX A]:
diamond