instruction:
You are given a sentence and a question. You're expected to write the correct answer based on the sentence.
question:
Sentence: Bryan enjoys playing basketball with his young daughter. After shooting some hoops, they sit down and roll the ball to each other. Sometimes Bryan takes her to his college gym and sometimes he goes to the courts at the park around the corner from his home. He notices that when they play roll-the-ball, the ball goes faster on the wooden gym floor than on the concrete basketball court at the park. Question: Which surface has more friction?
answer:
the concrete


question:
Sentence: The Sun is close to the Earth, but the stars are farther away. Question: Which appears smaller?
answer:
stars


question:
Sentence: A piece of toast heats up less when slid across a counter then when slid across a cutting board. Question: Which is the rougher surface?
answer:

cutting board