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 Sunday. So John and his family were going to church. But John knew he would be bored. So John bought his phone. And he played games on it while at church.
 selected sentence: So John bought his phone.

John knew he would be bored >Causes/Enables> John brought his phone 