Problem: What French mathematician and philosopher, devised roulette while trying to attain perpetual motion, and also invented the hydraulic press and the syringe?
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A: blaise pascal

Problem: US actor, producer and director Nicolas Coppola is better known by what name?
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A: nicolas cage

Problem: 'Night Train' was a 2010 UK number one album for which band?
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A: keane

Problem: When used as an artists' pigment, the oxide of which metal is known as Chinese white?
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A:
zinc