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: I once bought myself a basketball because I loved to play. I use to take that basketball everywhere. The basketball was like my best friend. I had it for three years. So when I lost the basketball I was very sad like I lost a friend.
 selected sentence: So when I lost the basketball I was very sad like I lost a friend.

I lose my basketball >Causes/Enables> I am very sad