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: Jill wanted to race Sara! They both met up in the park! They ran as fast as the could! They both tied! They laughed knowing that they were both great runners!
 selected sentence: They laughed knowing that they were both great runners!

Jill races with Sara >Causes/Enables> They laugh