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: Peggy loves parakeets and she already has three little birds. One day Peggy decided she wanted a new parakeet. Peggy went to the pet store to look at the little birds. One small bird was singing so sweetly to Peggy she decided to buy him. She took the new bird home and he fit right in with her flock.
 selected sentence: One small bird was singing so sweetly to Peggy she decided to buy him.

Peggy goes to the pet store >Causes/Enables> Peggy buys a parakeet