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

Input:
Question: What color is this unit - black and silver or white and silver?  Thank you!
Document: Tyent Ionizer will produce the most powerful alkaline ionized water that money can buy. Have enjoyed this unit for the last 2 years with nothing less then amazing results. The water not only works on humans but is great for pets too, just ask my horse!Everyone should own a Tyent Unit!
I have been drinking Tyent water for almost two years. I have a very low immune system and have only been sick 2x since I have been drinking this water, which is HUGE! I love my Tyent unit. It gives me more energy when working out. I don't feel bloated like tap and bottled water does to you and the acidic water helps my skin stay really nice and clear. I would highly recommend the Tyent units to anyone. I have my family and friends all drinking the water.
Since we paid a big price for this water treatment system, I wanted to be sure we got our moneys' worth and we did. This system is so advanced, it talks to you about what it's doing when you push buttons for various types of water and the water not only tastes good, it actually makes me feel pleasant and at peace.
I'm going to dispose of my half used filters and try to see if it clears up and how long it takes to happen again. If in truth it resolves with new filters I may just sell it.
I have one and I use it frequently. But everyone needs to understand this. All of these units, no matter what brand, have an issue that is not known prior to purchase. If you have any sulfur in your water it will eventually build up in the carbon filter. This means that at some point in time you will have water that smells like rotten eggs. If you switch to a different water source the problem will resolve with new filters. Even with new filters the problem will reoccur eventually.
Answer: no