Q: "What machine, that enables a person to breathe when the work of breathing exceeds their ability to do so, was invented by Phillip Drinker and Louis Agassiz Shaw in 1928 and improved upon by John Haven ""Jack"" Emerson in 1931?"
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A: iron lung

Q: How many people ride each elephant in the game of Elephant Polo?
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A: two

Q: According to the fairy tale Goldilocks, whose bed was too hard?
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A:
papa bear