You are given a sentence and a question. You're expected to write the correct answer based on the sentence.
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Question: Sentence: Dave notice that when taking batting practice the baseball moves slower on the natural grass of the team's practice field than on the artificial grass of the stadium. Question: Which surface has more resistance?

Answer: the natural grass


Question: Sentence: The Moon is less massive than the Earth. Question: On which would the gravity be lower?

Answer: Moon


Question: Sentence: Jim wears a thick Kevlar vest. Jack is just wearing a cotton shirt. Question: Which top would stop a bullet?

Answer:
Kevlar