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

Sentence: Jason has just woken up from a coma and needs to learn to use his arms and legs again.  He goes to the park to throw a ball with his friend Andy. Question: Who can throw the ball harder?
Andy

Sentence: Milo can roll his dumbell at a greater rate of speed in his gym then in his yoga studio. Question: Which surface has the most friction?
yoga studio

Sentence: Arnie's muscles on his upper arms are very thick, while Davy's upper arms are thin. Question: Who is likely to be stronger?

Arnie is stronger