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: Berkey's filtration system is the Black Berkey Filters, why are some listings referring as 'ceramic filters' instead of Black Berkey Fitlers?
Document: Frankly can't tell the difference, the white ones have worked great. Did a home water quality test when I initially got these and the white filters/candles performed well. (Note: the red dye test doesnt work on these)A few things to keep in mind though. First the Good:1) Berkey customer service is great. I had ordered the Big Berkey, but the Travel Berkey got delivered instead (who knows why).
We emphasize copious water consumption and these the most logical, efficient and cost effective means of accomplishing this.We have missionary friends in primitive areas of India and Africa who have also found the Berkey system to play a critical role in their lives. Everyone is happy with its performance.Regarding those who say it "leaks", I can authoritatively say that the spigot only leaks for those who don't know how to "screw a lid on tight" or don't know how to properly connect a hose onto a faucet.
Phenomenal system. Filters don't need to be changed for ten years (ish). Very pure-tasting, clean, refreshing water; love love love this system!
The 4 filters i have set up with this system makes my water taste so refreshing that i can drink cup after cup and never get that "This isn't water" feeling. If you drink regular tap water you know what i'm talking about; you drink a little bit of it and stop because of either the taste or how it makes you feel. With this water, you won't notice that and you'll continue drinking it.
Read instructions and assembled the filters and cans together. The top portion allowed unfiltered water to seep and leak through to bottom container. I so wanted this to work. Anyway, mailed it back for refund. Will have a whole house chlorine system installed and reverse osmosis installed in kitchen. Hope this works for others.
I love the product as a whole, but if I had to pick it apart it would be the spout. It's plastic and leaks sometimes. The Berky itself is awesome. I got this because I rent a house and didn't want to install a reverse osmosis system. We didn't want chlorine and fluoride in our water. I ordered the pf4 filters with it so it would filter those out. Works great. I suggest getting a bigger one if you and your family drink water all day though.
You'll save enough to buy four more filters. Which is what the unit should have in it anyway. search: "home made berkey water filter" for detailed instructions.
This is the fifth Big Berkey unit that I have purchased over the past ten years. I keep one at home and at work and they are in constant use in both locations. The others have been given to our kids and family around the country.They have all been very well made, bullet-proof, and deliver clean good-tasting water. All have been fitted with the second set of membrane filters in the lower chamber to remove fluoride and heavy metals, too.
We got this berkey with the floride filters - that made filtering water extremely slow. We would fill up the berkey at night and it might be half full by morning... after reading some negative info about the floride filters I decided to remove them, the water flow increased, now it fills up with in an hour or two. Figured out how to clean the ceramic filters every time the water starts to slow down. It fits between the counter and the upper cupboard , that was a relief.
Maybe your system will work better than mine without the leaks, but the water it produces is well worth the puddles.
Answer: yes