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: Where is this unit manufactured?
Document: The little device is very very light, and I carry it in my purse, but I wish there were some kind of water resistant pouch. I will update as I go along, but I am already impressed with the unit, and ready to get the enhanced version.
Unusually good. My first clue that something was up with this. (hair cannot think &#34;placebo&#34; like a human!
I was surprised. The water tastes even &#34;cleaner&#34; than my ionizer water (nice but expensive machine)  I have NOT tested this for PH, but previous reviews say it is good, and I tend to believe this. I don't have especially hard water, so I feel ok not using spring water on the machine. My problem - I am going to upgrade to the higher model.
First, I have used many kinds of water purifiers - alkalizing machines, alkaline drops, oxygenated water, crystal energy, cell food drops, and while they are good, or even great, the filters for the machines cost, and it is never ending as far as keeping up with getting these products, and they they are the opposite of this product - this product has NO chemicals, no minerals, no filters, nothing. It seems that the structure of the inside (moving the water) is the key.
Answer: no