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 legal drama starring Martin Shaw ran for six series on BBC TV from 2001?

Answer: martin shaw


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

Answer: mar chiquita lake


Question: Bandar Seri Begawan International airport is in which country?

Answer:
bandar seri begawan