Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: does the light bar tilt up and down?
Document: It serves that function perfectly. I especially like the longitudinal tilt on the lamp bar itself; which I believe is unique to this lamp.
This really solved my problem of not seeing well. It lights up the area of my computer and desk. Works well, seems to be quailty made. So many ways you can maneuver it around, both at the base and also the light bar to get the most out of the lighting.
Doesn't look quite like the picture (probably just the angle of the photo) but it is a great lamp. We're using it in our living room on a table between recliner chairs. It folds up into a thin line so doesn't obstruct our view of each other. The reading light and tilt adjustment is really good for late-night reading.
The purpose of this review is to touch on points that might not have been mentioned by other reviewers as well as to clarify some points raised by others which may no longer be the case.I recently graduated from law school and am preparing for the Bar. As such I read about 10-15 hours a day so I needed a good lamp that won't cause me eye strain and which is also highly portable and adjustable.
Also, the power cord is kind of short so I need to use an extension cable whenever I use it.Final thoughts: I love this lamp. It has surpassed my expectations in every way. I wanted something that could get me through Bar review without ruining my eyes and this has certainly done that. I've been using it for about a week and all my Barrister friends are jealous.
Since the arm can't be extend outward, you can only tilt the lamp upward at an angle to illuminate area away from lamp base which reduces brightness on targeted area.-  SWITCH = 3 star. The touch switch works fine. Each button beeps whenever it is touched, the beep sound is loud enough to disturbed someone sleep next to you while you read in bed.- FINISHES = 2 stars.Overall finishes is subpar for a $80 lamp.
its light is bright and soft.and can be adjusted according to conditions.i would say it fits my requirment very well.
and is very versatile and I like the different setting as to color hue and amount too. Light swivels to where you can place it where you need it...
This is a very nice desk lamp--solidly built and featuring brightness and light-color controls. It also fully illuminates my desk!
Perfect! Offers just enough &#34;cool&#34; light on my desk and does not glare on the computer screen. Great desk lamp.
Answer: yes