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: It was father's day. Jake decided to surprise his dad. He decided to purchase his dad some lottery tickets as a gift. His father ended up winning $1000! The two went to a steak restaurant to eat for dinner afterwards.
Why did He decide to purchase his dad some lottery tickets as a gift?

Answerable