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 this product bi-directional?
Document: Overall the product is ok - but needs some help to make it work well.
Great product. Only gripe is it has a tendency to scoot across the floor, but that can be remedied.
I purchased this product as a gift for my elderly parents. They are using it on a regular basis and appear to enjoy it.
They are very supportive and want to make sure that their customer's are satisfied. I would highly recommend this product to other's.
This product arrived in a timely manner. I bought it for my mother who is a senior citizen. She likes it because it has a heavy base which keeps it solid and stable when using it.
Purchased to use at computer desk for work. Thoroughly enjoy using however need to have the proper chair to sit in. Switched to a straight back chair while using product.
This product was exactly what I was looking for. Being older and not exercising for some time I needed a beginning piece of equipment to build up my strength. It arrived quickly and in perfect condition. Am very happy I ordered this item.
I suppose if you use a pilates mat or towel it won't move as much.The only drawback is that the resistance isn't enough sometimes, especially for my legs. It definitely gives me a workout but I wish it were just slightly more challenging. Other than that, this is a great product and I think it's worth the money.
I have been searching and researching the best under-desk minicycle exerciser for quite awhile. Finally it came down to this one, after returning another one with a misleading product description. I have had this machine for a few days and I have decided that, despite its flaws, I will keep it.
when rating a product like this, you have to look at it from the point of someone who actually needs it. I purchased this for my elderly parents and they really like it. they would give it a 5 stars so thats all that matters right, well since im the one rating it, im more picky.
Answer: no