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: Carrie turned four yesterday. She wanted a pony for her birthday. Carrie was allergic to horses. Her father dressed up as a horse for Carrie birthday. She rode along on her father's back happily during the party.
 selected sentence: Carrie turned four yesterday.

Yesterday was Carrie's birthday >Causes/Enables> Carrie turned four yesterday