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: I see ads for sump pump liners and lids - are these necessary if I am going to put this in a concrete "well" to pump excess surface water drainage?
Document: !With nothing more than a barely audible hum, I could feel the water moving through the PVC pipes and visibly see the surface of the water moving toward the well.
Bought this to replace another 1/2 HP Sump pump. The last one lasted about 7 years before the switch went out. I didn't realize how loud the old one was until I installed this one. All I hear is water rushing out. Now I just need to wait 7 years to see how well this holds up compared to the last one.
I installed this sump pump just about 1 month ago. The installation was pretty basic, just like any other pump. I had a few issues getting the pump to balance correctly on two bricks just because A) the unit is pretty heavy and B) the water was dirty enough that I couldn't see through.I have the unfortunate circumstance that my home sits on what appears to be some kind of underground spring. The ground can be completely dry, but water will seep into my sump pit through the bottom.
Great to have a well made pump made in the USA and parts readily available if needed - this pump is a tank and built to last. I was so tired of going through pumps that were supposed to be durable and last at least through their warranty period! I was glad to find Zoeller and read all the positive evaluations which sold me on purchasing this one.
This pump is a beast. We never got even a drop of water in our basement or sump pit before but during Irene, toward the end of the storm, our pump started running every minute or so. It pumped tons of water with each cycle (took about 5 seconds to bring water level down to below "on" level for the pump. You can tell this is very well made and is very durable. Very happy I have this pump in my sump pit!
I am prone to flooding and have a very high water table. The Zoeller pumps I installed before the spring floods saved my house from going under water. The pumps have been running continuously for over a year with no problems. I recommend getting a diaphragm switch to run them, Best pump I have ever owned,
For about $50-$60 more than these low quality pumps, you can get a premium Zoeller that will last.I also installed a new Campbell 1.5 inch check valve (from Amazon) which has a clear plastic body. The clear body allows a quick visual indication that the pump is working as you can see the water flowing when the pump is on.Overall, I am very satisfied with the Zoeller pump and it is highly recommended.
The product was great. Pumps water like all get-out. Its heavy and beefy. I don't think the seal on the float switch shaft will stand the test of time but otherwise should work for a long while. I'm going to order some repalcement seals for the future. If you had to carry this pump around in the back of your truck or in your tool box the float assembly wouldn't  last long either because it's very exposed and wouldn't take much abuse.
I feel very safe knowing it's ready to do its job when my sump well fills with water... which happens every time it rains. Every. Single. Time.
This was the perfect pump for my needs at a great price. I am going to purchased another for a second sump. Easy to hook up..
Answer: yes