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

Q: Who won the Women's Singles at the 2015 Australian Open Tennis Championships?

A: the championships, wimbledon
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Q: Which of North America's Great Lakes has the same name as a province of Canada?

A: canada
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Q: Who played the role of the 'Riddle in the 1960s TV series Batman?

A:
batman
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