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:  'The Dream of Gerontius' is the 1900 work of which English composer?

Answer: the dream of gerontius


Question: What is the capital of the US state of California?

Answer: california


Question: Which WW1 American General was known as Black Jack?

Answer:
black jack