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 in middle school. Every day, she walked three miles to school. One day, Sally decided she didn't want to walk anymore. Sally went to the store and bought a bike. From then on, Sally biked to school.
 selected sentence: Sally was in middle school.

sally made good grades >Causes/Enables> sally was in middle school