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

Q: Who composed the opera 'Albert Herring' in 1947?

A: albert herring
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Q: Against which country did Britain fight 'The Cod Wars'?

A: cod wars
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Q: Which English King was married to Catherine of Valois?

A:
catherine of valois
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