Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Which Bob Dylan song begins You got a lotta nerveTo say you are my friend. When I was down, You just stood there grinning?

Answer: bob dylan


Question: In which religion is there one god called Ahura Mazda?

Answer: ahura mazda


Question: Forty hours before he committed suicide in 1945 Adolf Hitler married whom?

Answer:
adolf hitler