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

Q: In which 1960's TV series did Clarence the cross-eyed lion appear?

A: clarence, the cross-eyed lion
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Q: I which European city will you find 'Dam Square'?

A: dam square
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Q: In which city would you find the Neva River, Nevsky Prospect and the ship The Aurora?

A:
russian cruiser aurora
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