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: 'Dookie' and '21st. Century Breakdown' are albums by which American rock band?

Answer: 21st century breakdown


Question: Augusta is the state capital of which US state?

Answer:
augusta