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: Bianca had dark brown hair. She wanted to make her hair a lighter color. She bought hair dye from the store. She dyed her hair a blonde color. Bianca's boyfriend complimented her new hair afterwards.
Why had Bianca dark brown hair?

Not Answerable