Definition: In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.
Input: story: Joe broke his leg playing soccer. He was in a full cast. When he went back to school all the kids wanted to sign it. All day people stopped him to add Something to his cast. It was full from top to bottom by the time he got home.
 selected sentence: Joe broke his leg playing soccer.

Joe falls >Causes/Enables> Joe breaks his leg