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 needed a pair of sunglasses. I saw some at the store. I picked out a pair I liked. I bought them from the store. They were too small for my head.
 selected sentence: I needed a pair of sunglasses.

I lose my old sunglasses >Causes/Enables> I need new sunglasses