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: A rock was loose in the curb. A truck came along and knocked it from the curb. The rock now lay in the middle of the street. Another car came along and ran it over. The rock caused the car to get a flat tire.
 selected sentence: The rock caused the car to get a flat tire.

A car drove over a rock >Causes/Enables> The rock flattened a tire on the car 