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: Riley went to the bar for karaoke night. This was his first time doing it. He sang an Aerosmith song. Everyone cheered. He apparently did very well.
Why did He sing an Aerosmith song?

Not Answerable