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

[Q]: Sentence: Manny and Kevin want to travel cross country. Manny takes a plane and Kevin takes a car. Question: Who crosses the country first?
[A]: Manny


[Q]: Sentence: A crab can scurry a greater distance over a beach then over an ocean floor. Question: Which surface gives the crab more resistance?
[A]: ocean floor


[Q]: Sentence: Karl is trying to light a match on his pant legs with very little success. He finds a piece of rough leather to strike the match against and the match lights up in no time. Question: Which surface provides more friction for heat?
[A]:
ROUGH LEATHER