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: HOW MANY PER $9.18 (4 ??)
Document: Gave only 4 stars because of the confusion caused by the '2-inch riser' part of the description.
I'd buy them again, but there is no need. I only gave them 4-stars because I couldn't bring myself to say that I loved furniture risers. ;o)
this is NOT a 2" riser as stated. it is only 1"tall. The riser is 2"wide only. It is of hard plastic.
perfect  for project soft tan bottom didnt scratch floor but elevated dresser that had wheels chopped off  in our case they cant be viewed but not a pretty riser but good for basic projects
Works for me. I was needed lift sofa on one inch to make it accessible for robotic floor cleaner. This item is exactly what i was looking for.
Worked perfectly for raising our daughters bed so the trundle could fit underneath! Not very tall but it was just enough.
Unable to use the product. Needs to be used on furniture that has a slipcover so you can't see the lifters.
The good:These are tough, well made units that appear to have a long life ahead. I bought them to raise a desk just a bit and they do the job perfectly - without adding any shake.Installation:  life desk leg, sllide riser in, center leg, lower.
Put them under my table and they sure hold up. The only draw back is that the top surface is really slippery if you don't put in the snails to stabilize it.
Now my Neato vacuum robot fits under the couch! No more stuck robot beeping to be saved. Great risers, highly recommend.
Answer: no