Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Does the filter system purchase include one filter?
Document: I just replaced my last Brita faucet filter system. I was pleased to discover, instead of plastic, there is metal where it attaches to the faucet on this model!!!. This was the reason the others did not last as long...the plastic erodes from movement and eventually will not stay on the faucet. This one should last a few years! Very happy with this purchase!
I'd used an older and visually identical Brita unit for years with no problems. Months ago, I'd bought from, and for similar reasons, returned to Amazon the same Brita filter system. I'd hoped the recent purchase would work better. Thanks to Brita customer service, it did.Possibly some units with unsatisfactory adapter and base unit thread dimensions were produced and Amazon sent one of those each time. I've had a similar experience with two other Amazon purchases prior to that.
Satisfactory service up to a year or two  afterwhich the base fails to function with respect to the warning light feature. Previous bases also incurred leaks around the filter mount. That was the reason for my purchase of the new system.
I'm having to replace the faucet filtration system after over 5 years use. Considering it retails for $29.99 and the fact that I just paid $17.39 for it, which includes a filter, I don't think that's too bad. The fact is, nothing lasts forever. This is especially true when it comes to plumbing because water is corrosive. The problem I finally had which caused me to purchase a replacement unit was that the rubber on the strainer inside the mounting collar went bad.
When first opening the box, though, you'll notice that the adapter is made of cheap plastic. I tried to get it to work, and every time the filter just popped off when the water pressure was about half strength. I then switch the adapter to a metal one ( from the PUR filter, who seemed to have enough sense to go not the extra mile, but at least the mile, to include something proper).
I solved the problem for my sink by heading over to the hardware store and grabbing a water hose adapter. I removed the hose adapter's washer and used one of the Brita ones, screwed the adapter into the sink fixture, and then the filter onto the adapter. Problem solved.This would be a five star product, but the fact that I had to drive over to the hardware store and find/purchase a $4 adapter lowers the rating to three stars.
I purchased this one to replace one that had worn out, and chose this model because there were already several replacement filters in the house. The old one worked very well, and I think there have been some improvements on this one. It was a good purchase, and I'm happy with the speed of its arrival.
There is nothing like spring water that comes out of your tap! The water tastes extremely clean and was an immediate difference. I have no leaking issues at all after a month of very, very frequent use. I use it for everything from ice cubes to my humidifier. I cant believe that I waited so long to purchase one.
This is great for a year or so but will break down. It is not built to endure. I'm on my third one. My other options are straight tap water or bottled water. Replacing this Brita once a year is cheaper than bottled water. I suppose that I could get a pitcher but that involves more labor on my part. Moral of the story? Treat this as a disposable once-a-year purchase.
Calling the Consumer Services number gets you a very nice real person who happily sends you much higher quality adapters that work immediately. The nice person's response when I asked why Brita doesn't simply include these adapters with the kit in the first place: "I honestly don't know!". My advice is to call Consumer Services (number above) when you order the filter- then you'll only have to wait another week or so after your filter arrives to receive adapters that work.
Answer: yes