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: It was christmas time and we were ready to decorate our tree. We went to the nursery to pick a perfect tree for our home. When we were there, it was snowing a lot and very cold. This made picking a tree more difficult but we did it. We took our perfect tree home and decorated it that night.
 selected sentence: We went to the nursery to pick a perfect tree for our home.

We leave home >Causes/Enables> We go to the nursery