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: Fred was on a plane He had the middle seat. He was upset but listened to music He ended up falling asleep He woke up when the plane landed
 selected sentence: He woke up when the plane landed

Fred ends up falling asleep >Causes/Enables> Fred wakes up when the plane lands