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: Mar Chiquita (Cordoba) is the largest natural salt lake in which South American country?

Answer: mar chiquita lake

Question: Which is the only film of the fantasy genre ever to win the best picture Oscar - full name required?

Answer: academy award for best picture

Question: Bismark is the capital of which US state?

Answer:
bismarck