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: Tina went to a birthday party. At the party, there was a great variety of snacks. She ate several helpings of her favorite kind of chips. When she got home, her stomach hurt terribly. She realized it was a bad idea to eat so many chips.
 selected sentence: Tina went to a birthday party.

Tina is invited to the party >Causes/Enables> Tina goes to the party