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

Q: Which former Blue Peter presenter died in April 2004, aged 41?

A: blue peter
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Q: Allopurinol is typically prescribed for which illness?

A: allopurinol
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Q: Who directed the 1973 film `American Graffiti`?

A:
american graffiti
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