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: What canal opened in Egypt?

Answer: egypt


Question: Harry, Tom, Dougie and Danny are collectively known as who in the pop world?

Answer: dougie poynter


Question: Which early Bob Dylan album and its title song reference a Texan gunfighter?

Answer:
bob dylan