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

Q: Who wrote and recorded the original version of the song Blue Suede Shoes which was a hit single for Elvis Presley in 1955?

A: blue suede shoes
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Q: Which novel by A J Cronin is credited with laying down the foundation in Great Britain for the introduction of the National Health Service?

A: a. j. cronin
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Q: Who plays the detective `Columbo` on TV?

A:
columbo
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