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: Barry lost his dog. He felt a hole in his heart. He went to the pet store. The dog he found was great. They are best friends now.
 selected sentence: Barry lost his dog.

Barry's dog passes away >Causes/Enables> Barry loses his dog