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: David was a college student. He did not have a lot of extra money. David saw a nice blue velvet couch on the curb with a free sign on it. David called a friend with a truck to help him move it to his house. David had a nice blue velvet couch.
 selected sentence: David was a college student.

David goes to school >Causes/Enables> David is a student