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: Where is the on/off switch located?
Document: after couple years, I discovered sand around the base, due to leaking base. the base was filled with loose sand. Once the plastic bottom cracked, sand leaked out. I had to take out all the sand and replaced the filling with leftover grout from previous home project. 2 weeks ago, the supporting pole snapped in 2, then I discovered the pole was composed of 2 sections, connected by a flimsy connector softer than plastic. the pole OD is 3/4&#34;, but no suitable connector is available from hardware store.
We are very disappointed that the unreplaceable 18W power ballast died before light bulb! This is a common issue withOttLite CFL lamps-inferior ballasts. Now it is an elegant doorstop. OttLite does not acknowledge this common problem.
This lite works great. It fits any number of ways and can be moved easily where ever I need it.
This item was for my grandmother. Her reading light in her living room had stopped working. So I searched floor lamps and found this light to be almost exactly like what she had previously. She is glad to have her light back so everyone is happy!! Thanks!! :)
This is a great lamp. I own 5 of them. Easy to move around, great for reading or doing needle work. You can adjustthe lighting to what ever you need. I highly recommend Ott.
The newer version does not have a bulky plug: it now has an ordinary 110V plug to the wall. I have older version as well and it worked for one year without problem and that's why I decided to buy another one. The base is solid and the flexible arm provide easy adjustment. Overall I really like this product. Highly recommended.
The light itself isn't as white or clean as it is from my http://www.amazon.com/Verilux-VT05FWW1-Happy-Light-Energy/dp/B002Q2H2JC and i like that the happy light has a high/low setting. The Ott Lite also was a little shorter than I realized (I can't get the thing angled the way I want at anything within a foot of top height). It works fine, and is definitely better than a regular light, but it's going back and i'm not looking for a replacement.
Ott lamps have a good reputation, but this model is an improvement in design over earlier models. It is more flexible and aimable, with the good light spectrum they are known for.
My mom is in a nursing home facility and her eyesight is very poor. She loves to read and has really enjoyed this lamp.
Love the full-spectrum lighting for reading and crafts.
Answer: no