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: Martha was walking down the street by the curb. Martha heard the ice cream truck. She opened her purse to take out some money. Her credit card fell out of her purse and into the sewer. Martha has to get a new credit card now.
Why did Martha hear the ice cream truck?

Answerable