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: The ball got stuck on the roof. The boy told his dad. His dad got the ladder. The ladder was too short. The dad got his son a new ball at the store.
 selected sentence: The dad got his son a new ball at the store.

The boy loses his ball >Causes/Enables> The dad gets the boy a new ball