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: John was a student at university. He was attending a large class. The class was completely silent for a moment. He cracked his knuckles very loudly. Everyone turned their heads to look at him.
Why did He crack his knuckles?

Answerable