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: Where is the Barbary Coast?

Answer: barbary coast

Question: Brasilia is the capital but which city in Brazil has the largest population?

Answer: brazil

Question: Oscar Schindler, Michael Collins and Alfred Kinsey have all been played on screen by which actor?

Answer:
michael collins