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: From which musical did the song 'Chim Chim Cheree' come?

Answer: chim chim cher-ee


Question: The plays 'The Barber of Seville' and 'Marriage of Figaro' were written by whom?

Answer: the marriage of figaro


Question: What is Canada's national day (Canada Day)?

Answer:
canada day