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: where do I find in the internet the video for this sport chair?
Document: This chair was good, glad I found it and purchased it. It was hard to find one like this. particular one. to buy...
This is my second chair. I had my first chair for approximately seven years. I never had any problems with the chair. It just wore out. It help me lose several inches from my abdomen. The material of the chair is sturdy and dureable. I recommend the Ab Lounge Sport for anyone looking for durablity and results.
The chair is also adjustable so that it can fit anyone, no matter their height. All of these parts are extremely well built and come with a 90-day warranty, which is nice, but I doubt it will be needed.When looking at the Ab Lounge Sport, one would not think that it would do very much, but it does. It is very easy to use and takes minimal effort compared to regular crunches or sit-ups.
First, there are the supporting poles, which are made of steel and will hold up to 275 pounds. This has been tested - my grandfather weighs close to that and he did not break it, so I truly believe it holds 275 pounds. Second, the base of the chair is made of a blue canvas material. The canvas material is very sturdy, yet very flexible and comfortable. It is so comfortable that one could just use the Ab Lounge Sport as a chair.
This makes it so that anyone can use the Ab Lounge Sport, from someone who has toned abdominals, to someone who has very weak abdominal muscles. The variety of the Ab Lounge Sport is a huge plus because anyone in the house can use this chair, young or old. There are many other ways to use the Ab Lounge Sport, and they are all included in an instruction booklet and workout DVD.
Many people are looking for the fastest and easiest way to get into shape and to stay in shape. There are lots of products out there, but not all of them live up to what they say they will do. The Ab Lounge Sport is not one of those products. The Ab Lounge Sport is an exercise chair that promises great abdominals with minimal effort and time. Today, there are thousands of abdominal machines and workouts on the market, but none will give the results that the Ab Lounge Sport does.
Third, there is a strong piece of elastic at the top of the chair for your hands to hold on to when using the Ab Lounge Sport. The elastic is much easier and more comfortable to hold on to than a metal bar, like most exercise equipment. For example, the Powertec Workbench Ab Bench Plus has a metal bar for support and costs almost three times as much. Finally, there is a padded metal bar at the end of the chair for your feet.
This machine really does work and I would buy it again and again. For those who say that they don't see results, I find that odd. This machine has been helpful for my wife and I think it can be useful to you too! Need to strengthen your stomach muscles? Buy this!
If I were to fold it for storage, I think I might unhook the elastic bands so they would not be stretched out. I looked online and found directions at a website called LiveStrong (dot) com.You can find an owner's manual for this (and many, many other items) at manualsonline (dot) com. Google is your friend! !
I find the space needed for this one and the storage more challenging. While out - it takes up about 6-1/2 feet by 2-1/2 feet of clear space to use - or almost as much as a couch. At the same time, it's not really attractive enough to be putting out as a general lounger. Storing it, isn't as easy as the infomercial makes it appear. It's big and bulky even folded up.
Answer: yes