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: Barabas is the central character in what 16th century play?

Answer: barabas


Question: Who married Amal Alamuddin on September 29th 2014?

Answer:
amal clooney