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: When I was in middle school, we played outside often. After school and on weekends, all the kids would group up together. We played all sorts of games, but one day I decided to tree climb. I climbed up the tallest tree in the neighborhood. I grabbed for a branch that wasn't there, and fell two stories!
 selected sentence: I grabbed for a branch that wasn't there, and fell two stories!

I climb a tree >Causes/Enables> I fall