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: Tricia called her friend and invited her to the park for a picnic. She packed her picnic basket with food for the both of them. They met at the park and ate at the picnic table. They cleaned their mess and decided to go for a walk. They walked the trail after dinner, and talked about life.
 selected sentence: They walked the trail after dinner, and talked about life.

Tricia and her friend decided to go on a walk >Causes/Enables> Tricia and her friend walked on a trail