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: Oliver had a spelling test in class. The test began and he tried to do his best. At the end, his teacher collected all of the papers. She took them to her desk to grade them. When she was done, Oliver saw that he had passed.
 selected sentence: At the end, his teacher collected all of the papers.

The test finishes >Causes/Enables> The teacher collects the papers