Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: does mats come with velcro to attach several mats together?
Document: These are very solid, durable, professional level mats. They are well worth the price and fit together wonderfully if you need to cover a large area as I did. The customer service at We Sell Mats was also very good.Beat my expectations.
Answer: no