Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: how deep are the fitted sheets pockets?
Document: Love the colors, but I have to admit the deep pockets do not stay on the mattress. Have to keep getting up and putting the corners back on. Will have to attached elastic strips on the corners to keep the pockets on the corners of the mattress.
Great quality, very soft. My daughter loves the set
AS EXPECTED  THE MATERIAL IS SOFT. THE COLORS ARE VIBRANT. THE FIT IS PERFECT. I AM GLAD I ORDERED THIS ITEM.
Answer: no