Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: is the bottom side black?
Document: This product worked as advertized. It held right away, was easy to install, and would recomend this to anyone. Good investment.Plan on keeping a roll handy at all times.
This is great repair tape. I've been using it for years. I originally, patched an old metal shed roof. After about 5 years, it still does not leak. Lately, I patched the bed of my '78 Ranchero that had rust holes and did great. It adheres good and is easy to apply. Doesn't need any heat to be applied.Highly recommended.
This is an amazing product, great adhesion for sealing  the top of my RV.. Sealed both end caps across the top...  Lots of rain and no leaks anywhere!
I used this to cover some holes on the edge of my roof. That was two years ago. I thought this would be a temporary fix but this product has held up considerably well. Nor the heat of summer, nor the ice of winter has affected its efficiency.
I had a problem with this stuff sticking on my RV. I contacted the company and they called me personally and walked me through a fix. The even offered to replace the product for free if I wasn't satisfied. The fix worked and I was very happy with the customer support.
Good item for those wanting to use it as a quick seal. It worked perfect on my roof repairs. I would recommend this product.
Awesome product for sound proofing. Easy to install and use. Highly recommended. Very good price and fast shipping. good shelf life.
Answer: no