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

Example Input: Sentence: Shawna and Lynn are on a tandem bicycle. Shawna is pedaling furiously, while Lynn is barely moving and letting Shawna do most of the work. Question: Which of the two will show perspiration stains on her shirt first?
Example Output: Shawna

Example Input: Sentence: Kate runs around a track for 10 minutes and John walks around a track for 10 minutes. Question: Who will produce less sweat?
Example Output: John

Example Input: Sentence: Bob took his toy car outside to play with it. He rolled it on the street and then he rolled it in the grass. He noted that the toy car rolled much faster in the street. Question: Which surface caused more friction?
Example Output:
The grass

