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: Maria had a birthday party. She was turning 21. All of her friends came to the party. They had a really good time. Maria was glad she was turning 21.
 selected sentence: Maria was glad she was turning 21.

Maria turns 21 >Causes/Enables> Maria is glad