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: Who died of a burst appendix after being punched in the stomach?

Answer: appendicitis


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: What is the name of the film director whose films include Bladerunner and Gladiator?

Answer:
gladiator