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: Little Jimmy loved to climb trees. His mother thought it was dangerous. One day when his mother wasn't watching, he climbed a big tree. Jimmy fell and broke his ankle. Jimmy never climbed a tree again.
 selected sentence: Jimmy fell and broke his ankle.

Jimmy climbs >Causes/Enables> Jimmy falls