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

Answer: the doughnut


Question: Thereze Bazar and David van Day were better known as which duo?

Answer: david van day


Question: Which of North America's Great Lakes has the same name as a province of Canada?

Answer:
canada