Definition: You are given a sentence and a question in the input. If the information provided in the sentence is enough to answer the question, label "Yes", otherwise label "No". Do not use any facts other than those provided in the sentence while labeling "Yes" or "No". There are only two types of valid responses: Yes and No.
Input: Sentence: One day Mark was out playing football when he tripped and hurt his knee, the next day Matthew was also playing football when he fell and hurt his arm. 
Question: Which of the boys hurt his arm, and from what?

Yes.