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

Example input: Sentence: Jacob and Benny are squatting at the gym. Jacob has thin frail legs and Benny has big strong legs. Question: Who squats less weight?
Example output: Jacob
Example explanation: Typically, people with thin frail legs squat less weight than people with big strong legs, so the answer is Jacob.
Q: Sentence: A traveler wants to go between cities in Japan. She does some research and sees that a bullet train can go much faster than a car. Question: If she wants to spend less time in her trip from city to city, which should she choose?
A:
bullet train