Problem: The 200th anniversary of which event was commemorated by the minting of 2 coin in 2007?
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A: abolition of slave trade

Problem: "How many engines were there on Howard Hughes ""Spruce Goose""?"
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A: 8

Problem: What was Cameron Diaz's first major movie? (hint: her co-star was Jim Carrey)
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A: mask

Problem: Which chemist discovered Nitrous Oxide in 1772?
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A:
joseph priestley