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 saw the snow come down. He waited for a phone call. The school called. They said school was closed. Stephen celebrated.
 selected sentence: The school called.

Stephen waits for a phone call >Causes/Enables> The school calls