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: Is there a recommended ceiling height with this machine?  What is the height step clearance? Thank you!
Document: We bought the machine to replace our Sole E35. This machine was the best home elliptical we could find for under 2000.00. Our Sole elliptical was noisy, the flywheel frequently required maintenance, and constant cleaning of the track and rollers were essential. The Sole was not enjoyable to use or maintain during the 5 years we had it.We were able to try the Lifecore prior to buying as a high end store in our area had one on the showroom floor. The difference was astonishing even in the showroom.
The only maintenance I have performed on the machine is to tighten stews and bolts every 20 or so hours of operation. I also wipe it down after use. This machine is used by 4 people in our home at least 3 days a week each. It is also much more compact than our Sole so it fits in the corner of the living room. Most guests look at the machine and ask where we were able to buy a gym quality elliptical. I just cannot say one bad thing about the unit.
I can't actually review the elliptical because I never received it. However, it was highly recommended by friends who own it.I placed the order and Amazon charged my credit card the next day. The delivery was supposed to be 6 days later. The freight company (ABF) gave me a three hour window, but showed up 2 hours AFTER that window with the WRONG ITEM -- a LifeCORE recumbent bike. I refused delivery. The Amazon customer service rep apologized but didn't give a credit for the inconvenience.
The freight company (ABF) gave another three hour window but called FOUR HOURS AFTER the window to say that it was the wrong item again; delivery refused.I just canceled the order with Amazon. I had to argue just to get a small promotional credit that makes up the price difference to another LifeCORE distributor's price. They wouldn't give anything for making me miss a day and a half at the office and still not get the item I ordered.
Answer: no