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.

Richard spent every day with his dog Spot. They loved to go on long walks together. Richard notices that Spot is getting older, but he tries to ignore it. One day Spot gets sick and dies. Richard has lost not only his best friend, but his only friend.
Why did Richard notice that Spot is getting older?
Output:
Not Answerable