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: We told our son we were going to visit relatives. He was ok with it, and completely believed us. We packed up for the long trip. We drove for several hours. His eyes lit up with joy when he saw his best friend instead.
 selected sentence: We packed up for the long trip.

We decide to go on a long trip >Causes/Enables> We pack up for the long trip