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: Baltusrol Course lies in which US state?

Answer: baltusrol golf club


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

Answer: lady sings the blues


Question: Aconcagua is the highest mountain in which mountain range?

Answer:
aconcagua