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: Sally was going on her first plane trip. She felt scared, but tried her best to be brave. After the plane took off she fell asleep. When she woke up she was at her destination. Sally was proud of herself for not letting fear get the best of her!
 selected sentence: After the plane took off she fell asleep.

Sally went on a plane >Causes/Enables> Sally slept on a plane