Given the task definition and input, reply with output. 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.

I realize that wheat flour was bad for my stomach. I became upset that I couldn't use wheat flour anymore. My friend told me that I could make flour out of acorns. I harvested some acorns and ground them into flour. The acorn flour was a perfect substitute.
Why did I become upset that I could n't use wheat flour anymore?
Not Answerable