You will be given a definition of a task first, then some input of the task.
In this task you are given a story and a question regarding that story. You must judge whether the question is answerable based on the info given to you. Label the instances as "Answerable" or "Not Answerable" based on your judgment. the story and the question are separated by a new line character.

Becky bought new shoes. She loved the way they looked. They fit too tight. At first Becky dealt with it. Eventually it was too much and she had to exchange them.
Why did Becky buy new shoes?
Output:
Not Answerable