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: In which city will the 2014 Tour de France begin?

Answer: 2014 tour de france

Question: What American swimmer won eight gold medals at the 2008 Olympics?

Answer: 2008 summer olympics

Question: Who was the Queen consort of King Charles the Second of England?

Answer:
charles