Problem: Humidity measures the quantity of water vapour in the air as a percentage by what?
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A: volume

Problem: Who played the male lead with Goldie Hawn in the 1987 film comedy?
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A: kurt russell

Problem: Who was the Roman god of fire?
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A: vulcan

Problem: In psychology the (positive) 'Pygmalion effect' and opposite (negative) 'Golem effect' influence people by?
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A:
expectation