Problem: In which American city are the headquarters of Amazon.com located?
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A: seattle

Problem: Development of which aero-engine sent Rolls-Royce into receivership in 1971?
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A: rb211

Problem: Created by Nintendo in the 1980's, what is the profession of the video game character (Super) Mario?
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A: plumber

Problem: What circus billed itself as "The Greatest Show on Earth"?
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A:
ringling brothers and barnum bailey