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: Which singer played Billie Holiday in the 1972 film `Lady Sings The Blues`?

Answer: lady sings the blues


Question: Which European country has the Cupon as its currency?

Answer: moldovan cupon


Question: Which British Prime Minister was the 1st Earl of Stockton?

Answer:
earl of stockton