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: Amy got a flat tire on the way home from work. She called Triple A and waited nervously. A truck pulled up behind her, but it wasn't Triple A. It was a man who stopped to help and he changed the tire for her. Amy drove away, happy there were still good samaritans in the world.
 selected sentence: It was a man who stopped to help and he changed the tire for her.

Amy gets a flat tire >Causes/Enables> A man stops to help