[Q]: Adam wants to show his little brother a trick. He gets a bucket of water and says to him "I bet i can turn this bucket upside down and no water will fall out". His brother doesn't believe him of course. So Adam takes the bucket by the handle and quickly starts spinning it in a circle. Given the paragraph above, please answer correctly the following question: Which is creating the centripetal force on the water, Earth or Adam?
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[A]: Adam

[Q]: Two neighboring islands had different sized populations. Green island had a small population. Red island had a large population and environmental problems. Researchers studied these islands over a span of 5 decades. Given the paragraph above, please answer correctly the following question: Which island had plenty of food for its inhabitants?
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[A]: Green

[Q]: Two sister cities were part of an air pollution study. While Prague had big air pollution problems, Belfast was eco-friendly and its inhabitants were healthy. Given the paragraph above, please answer correctly the following question: Which city had fewer people with an increased chance of developing lung cancer?
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[A]: Belfast

[Q]: Two smoker friends found out more about cancer. Bill got scared and started making healthy lifestyle choices, while Dan carried on with his life as if nothing happened. Given the paragraph above, please answer correctly the following question: Which friend didn't decide to avoid UV lamps?
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[A]:
Dan