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: Jessie was about to go to summer camp. First, his mom had to drive him to the bus stop to catch the camp bus. They had to drive through the woods, and through a big city. Finally, they arrived at the bus stop. Jessie said goodbye to his mom and boarded the camp bus.
 selected sentence: Jessie said goodbye to his mom and boarded the camp bus.

Jessie arrived at the bus stop >Causes/Enables> Jessie boarded the bus