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: What is the main river of Brazil?

A: brazil
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Q: Which star of the 1970's sitcom 'The Fall and Rise of Reginald Perrin' has been a regular in 'Coronation Street' since the 1980's?

A:
coronation street
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