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: The bells were ringing for Chuck Berry when this song made it to No1. His first and only British No. 1. What song?

Answer: chuck berry


Question: Which 1976 Derek Jarman film was dialogued entirely in Latin?

Answer: derek jarman


Question: Published in 1980, which American author wrote the book The Bourne Identity ?

Answer:
the bourne identity