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

Input:
Question: what kind of wall plug adapter should I get or what does it even look like?? oh and is the skinny neck sturdy enough to support the heavy head?
Document: Nice lamp, quite bright for a LED lamp. It's  definitely a task lamp though, not bright enough to use beyond the desktop. Unlike what one reviewer said, the base is plenty heavy to support the upper lamp and the flexible arm in just about any position. The base is actually a little larger than I was expecting. This is perfect for using on a computer desk. Definitely feel like I got a deal on this, it is much nicer than I was expecting for the price.
Lamp is very light weight and has USB &#34;plug&#34;. Unfortunately it came without the wall outlet plug adapter! Wonder if Amazon reads these ratings and will send us the adapter?? ?
I was in need of a desk light and after reading the reviews, this lamp looked like a great option.#1 - It says &#34; to operate with standard AC power (wall outlet) plug USB cord into INCLUDED ADAPTER.&#34;  There was NO ADAPTER in the package!!!!! That is upsetting that it was shipped with a missing part.#2 - It is not nearly as bright as i thought it would be. It barely makes a difference on my desk.
I cannot review how well this desk lamp works, yet. I returned one since it was missing a USB-AC Adapter which is supposed to be included according to its instruction &#34;To operate with standard AC power (wall outlet) plug USB cord into included adaptor. Plug adaptor into wall outlet.&#34;  Such an omission by the manufacturer is incurring considerable shipping/processing cost to Amazon and frustrations/time/return effort for to the customers. I'm returning the second one without trying it out unless Amazon can send me the adapter.
Was missing the power adapter. Didn't want the hassle of trying to get a replacement, so I sent it back.
Packaging said it was supposed to have a wall adapter, but it didn't come with one. Whatever. I'm using it at the computer and the USB thing is fine.The USB thing may be the reason the light turns itself on though. Haven't found a correlation between sleep/wake state of the computer and the light turning on.Speaking of light, one of the LED's is bad.
I brought this lamp to replace one that lasted less than 3 months. So far these last few months it has more than met my expections. I will say that the lighting head was larger than I expected but still fits the area on my computer table very well. It is well balanced and does not tip over even when I bend the gooseneck to odd angles. The light switch offers three level of lighting--Low, medium and high,  plus off. This works well. It is very bright on the High setting and just right for me on the low setting at night when I am typing.
Medium and high are brighter and better for me.The touch sensor is small (it's located near the front of the base and is about 1/2 inch by 1/2 inch), so while trying to turn it on in pitch dark is sometimes hit or miss, you'll quickly find it and it will turn on. Lightly whack the base of the lamp a couple of times with the palm of your hand and you'll get it.Unless you plan on plugging this into your computer, you'll need a USB power adapter - this lamp didn't come with one.
This is just what I needed for my home office. A small lamp that is bright and uses no extra plug. The only problem I have with it is that the touch active is sensitive to temperature so I could not keep it by my window.
I bought 2 of these and they showed up today, so far they are great and very happy with purchase.. They are bright and look great sitting on desk, for the price this was a very good buy! Only time will tell on quality, but so far so good!
Answer: yes