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 country did the dance The Czardas originate?

Answer: csardas

Question: The 1987 film 'Roxanne' was adapted by actor Steve Martin from which Edmond Rostand play?

Answer: roxanne

Question: Which state donated the land occupied by the US capital city, Washington, District of Columbia?

Answer:
washington, d.c.