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: Tim's father baked a cake for Tim's birthday. Tim brought the cake to school. And he told his teacher that it was his birthday. At lunch, students were allowed to line up to eat the cake. After school, Tim found the cake in a trash can.
 selected sentence: At lunch, students were allowed to line up to eat the cake.

Tim brought cake to school. >Causes/Enables> Students were allowed to eat cake.