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: Kelly took the bus home from school. When she got home she realized she lost her keys. She looked everywhere for them. Unfortunately she had to wait til her parents got home. Thankfully they made it home and opened the door.
 selected sentence: Thankfully they made it home and opened the door.

Kelly's parent's waited for her parents at home >Causes/Enables> They came home to open the door 