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: Who composed 'Belshazzar's Feast' cantata?

Answer: belshazzar's feast

Question: In March 1992 'Deeply Dippy' was the only number one hit for which group?

Answer: deeply dippy

Question: Anthony Hopkins and Emma Thompson play the head butler and housekeeper in which 1993 film?

Answer:
emma thompson