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

[Q]: Sentence: Toby went ice skating during the winter and noticed that he hardly had to put any effort into moving forward when he switched from the sidewalk to the ice on the pond. Question: Which surface was smoother?
[A]: Ice pond


[Q]: Sentence: Bob bought a wireless mouse and noticed that the pointer was slower to move than the wired mouse he had replaced it with. Question: Which mouse traveled fewer pixels in the same about of time?
[A]: the wireless mouse


[Q]: Sentence: Two identical trucks begin to accelerate as fast as possible. One truck is empty and one is full of bricks. Question: Which truck will accelerate more quickly?
[A]:
Empty truck