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

Q: The headquarters building of which government agency is known as 'The Doughnut' due to its shape?

A: the doughnut
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Q: What is the county town of Derbyshire?

A: derbyshire
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Q: Generally acknowledged as the father of role-playing games, Gary Gygax, along with Dave Arneson, was the mastermind behind what major game?

A:
dave arneson
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