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

Example Input: Sentence: A car company wants to start producing a new car. Their two options for the material of the body of the car are steel or carbon fiber. Question: If everything else about the car is the same, which car will accelerate slower?
Example Output: the steel car

Example Input: Sentence: Mike rode his skateboard and his rollerblades one after the other. He rode them both at the same speed, but he rode the skateboard for a longer amount of time. Question: Which method made him travel the greater distance?
Example Output: skateboard

Example Input: Sentence: A segway can travel a much greater distance inside a shopping mall before needing a recharge then when it is cruising around outside on the street. Question: Which surface is rougher?
Example Output:
street