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: Mark was excited. His class was putting on a play for the school. His class walked onto the stage and he saw the large crowd. When it was his turn, he stepped forward and said his lines. He saw his parents also sitting in the crowd, cheering him on!
 selected sentence: His class walked onto the stage and he saw the large crowd.

Mark's class was putting on a play >Causes/Enables> Mark's class walked onto the stage