Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: how many keys come with this set? Can extra keys be ordered with purchase?
Document: So I purchase these for the new house I just moved into they look good I got a set for the front door and a set for the garage door. But I just found out both set have the exact same keys, I mean the "Key" opens both of the dead bolts and both of the regular door handle. My concern now is how many of these exact keys are out there? Each set had its own individual package and its own set of keys but they have the same number on them.
This is not the cheap home depot schlage lock, this is good heavy built lock set. It was easy to re-key also (if you know how), unlike the lower grade units.
It has not been installed yet because of delay in the delivery of my new door. But it is exactly what I wanted in the handles and the quality is excellent.
I have also updated my rating, for the reason that it became handy to use the same key and the look of them is way better now on a light color door (my security screen door is Navajo white, the regular door is red)
Answer: no