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: Stephen got up in front of his class. He had recently used the bathroom. He saw kids laughing. He looked down at his fly. His fly was wide open!
 selected sentence: His fly was wide open!

Stephen forgets to zip up his fly >Causes/Enables> Stephen's fly is open