Definition: 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.
Input: Jim was driving to work. He stopped at a red light. He looked in his mirror and saw a semi come barreling towards him. He pulled to the side of the road and to avoid the collision. The semi struck the car in front of him.
Why did He look in his mirror?

Not Answerable