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 waterproof is the bag?
Document: Travelled or six weeks through Scandanavia with this back. Great size, and actually cool looking, not typical back packer clich&eacute;. I highly recommend it.
Answer: no