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: Name Shakespeare play Ariel, Miranda and Prospero appear?

Answer: ariel


Question: What is the largest city in Bavaria?

Answer: bavaria


Question: Which 19th century gardener, architect and MP designed the Great Conservatory, a huge glasshouse, at Chatsworth House?

Answer:
chatsworth house