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: Leo's mother took him to the park. Leo wanted to swing on the swing set. Leo was swinging very high. Leo fell from the swing and skinned his knee. Leo's mother took him home and bandaged his knee.
 selected sentence: Leo fell from the swing and skinned his knee.

Leo swings >Causes/Enables> Leo falls from the swing