Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: I also noticed that the black substance is leaking through the stages into the water, is that even safe?
Document: This is a great water filter system. I no longer have plastic water bottles. The water tastes great too! no funny smell or bad taste!
THE WATER WE GET IS COMING FROM A RECENTLY FINISHED WELL IN OUR COMMUNITY. IT SMELLS BADLY OF CHLORINE , WE WERE BUYING WATER AND HAVING TO DRIVE 5 MILES TO GET IT AND PAYING 25CENTS A GALLON , THE MAXAM 8QT 7 STAGE WATER FILTRATION SYSTEM PAID FOR ITSELF AFTER ONLY ONE MONTH THE WATER IS NOW DRINKABLE AND WE FEEL SAFER.
Answer: no