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: What is the capital of the US state of Delaware?

Answer: delaware

Question: Name the town in California where Clint Eastwood was elected mayor in 1986.?

Answer: clint eastwood

Question: In the episode of Coronation Street that aired in Britain on 3 March 2008, who pushed Gail Platt down the stairs, leaving her hospitalised and suffering short term amnesia?

Answer:
coronation street