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

Sentence: Karen was playing football at the park. She threw the ball and it hit the ground, rolled on the field, and then rolled into a gravel playground. The ball generated more heat when it rolled over the gravel. Question: Which surface is more level?
field

Sentence: Mercury is less massive than Mars. Question: Which one has the weaker gravitational force?
Mercury

Sentence: Joe was the fastest runner in his school. Another student at his school, Larry, challenged him to race the length of the football field. Question: Which student made it in the least amount of time?

Joe

