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: Tim was playing in the grass. He fell and hurt his knee. He started to cry. The doctor said it would heal in two weeks. Tim decided to never play in the grass again.
 selected sentence: He fell and hurt his knee.

Tom was playing in the grass >Causes/Enables> Tom fell, hurting his knee