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: Arthur and his friends were under eighteen. One Sunday they were out of control and wanted money. Arthur suggested they rob someone. They pulled up to a man and demanded his wallet and backpack. He resisted and Arthur and his friends were caught in the act.
Why were Arthur and his friends under eighteen?

Not Answerable