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: What was the name of the Prime Minister of Egypt who was assassinated in 1910?

Answer: egypt


Question: What was the currency of Belgium before the introduction of the Euro?

Answer:
belgium