Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Q: Who married Brooke Shields in 1997?

A: brooke shields
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Q: Who played Captain Jean-Luc Picard in the television series 'Star-Trek: The Next Generation'?

A: jean-luc picard
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Q: In September 2011, who became the oldest living artist to have a number one album, with Duets II, in the US charts?

A:
duets ii
****