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: Sharon had a beautiful blue backpack that she loved. She kept all of her homework in there. One day, she sat next to Someone on the bus who had the same backpack. When she got to class to turn in her homework, it wasn't in her bag! She had grabbed the wrong backpack off of the bus!
 selected sentence: She kept all of her homework in there.

Sharon has a beautiful blue backpack >Causes/Enables> Sharon keeps her homework in her backpack