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

[EX Q]: What nationality was Che Guevara?
[EX A]: che guevara

[EX Q]: Where is David Cameron's Oxfordshire constituency?
[EX A]: david cameron

[EX Q]: Which chemist, engineer, and armaments manufacturer invented dynamite and a detonator for it and then founded a longstanding series of world prizes for, among other things, promoting peace?
[EX A]:
dynamite