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: Sally had a birthday coming up. She was excited about her party and gifts. When she got to her party there was a table full of gifts. She could not wait to open the biggest one. It in was the most perfect purse and she was so happy.
 selected sentence: It in was the most perfect purse and she was so happy.

Sally opened the biggest birthday gift >Causes/Enables> It was a purse