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: One day jim found a phone number in a book. It was written in the cover. He called the number hoping to speak to Someone. The phone rang and rang. He hung up because nobody answered the phone.
 selected sentence: One day jim found a phone number in a book.

Jim opened a book >Causes/Enables> Jim found a phone number in the book