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: Alison hates turtles. Allison's class went on a field trip to a zoo. They saw many turtles. Alison almost threw up from looking at the turtles. She was very glad when they left the zoo.
 selected sentence: Allison's class went on a field trip to a zoo.

Allison's class decides to go >Causes/Enables> Allison's class goes