Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: how exactly does this work? is it battery operated or does it have to be electrically installed?
Document: Unfortunately these were a mistake, I didn't want to hard wire this job, I do like thier look and thats why I bought them, but failed to notice they were not battery operated.
I needed to replace lighting in my living room and came across these on Amazon. When they arrived, they looked fabulous. Much nicer than the display on the web. I was so pleased with the installed item, I purchased three additional sconces for a total of (6) and very glad I did. The supplier is very good to work with as well.
Can't find better for the price or even twice as much. Installed flush no problem so anyone having issues with this did something wrong.
The factory packing was inadequate so when Amazon sent out three, only one of the glass shades arrived unbroken. The one that was good was trial installed and there was too much light leaking between the wall and the shade. Additionally, with the bulb socket mounted sideways, there is significant variance of the light from side to side. Overall a cheap product. Sent all back to Amazon.
I just installed two of these and found them attractive and priced well.Both arrived packed well and unbroken.They were very easy to install.The design forces the half-bowl to be supported by the finnial, but this worked fine as long as you make sure the parts are in the right position when you tighten it. If they are not, the bowl will easily come off. One reviewer bashed this, but I suspect it was user error.
This is exactly as described and pictured. I guess I hoped it would fit closer to the wall but there's about 1/4&#34; space between the sconce and the wall so doesn't look as nice as it could if it were flush to the wall. I would probably have to spend a bit more money to get one that does that. Easy to install, took about 30 min. to check that all parts were there & read instructions then install. It's a nice sconce for the price.
You can't really see the color variation in the picture - it just looks like a bad pic but this thing is really nice. Kind of looks like antiqued paper mache overlay. Gives off a nice, soft, warm color tone. I love it. I wish I had ordered this style for my other room that needed a light and my hallway. I may still change out the two remaining sconces once I decide whether or not I'm going to build cabinets where they are.
We just needed a few, 5, sconces to do 2 things: 1. To give off good light. and 2. Not be over the top, in your face kind of lighting. These did the trick on both accounts. Shipping charges was the same weather you order one or 5. Great deal! I do wish they fit totally flush against the wall, there is a ever so slight gap between the shade and the wall.
This sconce comes with everything you need to mount it, and goes on without any problems. I did have to adjust my electrical box to make the translucent sconce lay flat against the wall, but that says more about my carpentry skills than the light.Two things worth noting, especially if you're using LED bulbs rather than incandescent.1) The light fixture is oriented sideways, meaning that the bulb faces to the left. If you're using an LED bulb, the left side will get more light than the right.
This is a very pretty light. The only thing I don't like is that the light bulb has to sit sideways so there is more light on one side than the other and it's noticeable but other than that its great.
Answer: yes