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

Q: Which popular animated characters, first seen in 1996 include many different characters including ones called Ash Ketchum, Tracy Sketchit and Gar Oak?

A: tracy
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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 public school did the Duke of Edinburgh and Prince Charles attend?

A:
prince philip, duke of edinburgh
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