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: Does this filter fluoride?
Document: I was looking for a bottle that would last and this one was it filter is good and water is good
Nice bottle,  but they forgot the filter. The product needs checking, it could be very nice if they fix that issue.
its a good water bottle....the fact that it has a filter on there makes it easier to drink from and easy to take the lid off and drink with.
This is a wonderful water bottle. I love the insulated filtration and was able to order an extra filter for the bottle.
Works as advertised. Comes with an optional straw so that you don't have to use the filter. Filter takes away from the amount of water you can have. Nice having the option to filter if in doubt.
This is my favorite water bottle. It keeps water cold for hours. The filter works great, the water at my work is chlorinated, and with this bottle you can not taste the chlorine at all. Great buy!
The filter kept giving off black particles in my water. I passed water through it several times and still had particles in it. I had to throw it away because I couldn't use it.
Best bottle ever stays cold filter works great no need to look any where els for water bottle or you can not us the filter works great without it too
I bought this to take to Nicaragua and I use it everyday. It is a bit difficult at times to connect the straw to the filter, but a lifesaver when I am traveling in rural areas. Great purchase!
This bottle is all you need. From the Rockies, Desert, and back up the Wasatch Front it's my go to for biking, camping, skiing and backpacking. Fill it up with soup for the office or filter water from the stream- it's a one stop shop.
Answer: no