instruction:
You are given a sentence and a question. You're expected to write the correct answer based on the sentence.
question:
Sentence: A table leg rolled across laminate has an easier time rolling then one rolled across wood. Question: Which surface will allow the table leg to reach a higher top speed?
answer:
laminate

question:
Sentence: An envelope that is slid across a dresser gets rather hot, while one that is slid across a desk doesn't get very hot at all. Question: Which surface has more friction?
answer:
dresser

question:
Sentence: Biff was trying to prove to the bar that he was very strong. Question: Which would be a better thing to rip in half to show off?
answer:
Phone Book