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: Evelyn did not want to go to Tiffany's party. She decided to tell Tiffany that her baby was sick. Later Tiffany saw photos of Evelyn and her baby on social media. She knew Evelyn's baby was not sick. Tiffany was very upset about being lied to.
Why did She know Evelyn 's baby was not sick?

Answerable