You are given a sentence and a question. You're expected to write the correct answer based on the sentence.

Q: Sentence: A spring rolling along a bed experiences very low friction, while one rolling along the floor experiences high friction. Question: Which surface is less rough?

A: bed
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Q: Sentence: Kelly is standing on the planet Mercury. Allison is on Pluto. Each girl is looking up into the sun. Question: Which girl has a brighter view of the sun?

A: Kelly
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Q: Sentence: Stacey is rubbing her fingers on various items at the grocery store. She notices that when she rubs her fingers on the glass jar, it has less resistance than if she rubs her fingers on a pair of corduroy pants. Question: Which object will generate less heat when Stacey rubs her fingers on it?

A:
glass jar
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