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: Is it battery operated or electrical?
Document: I'm a huge OttLite fan and haveOttLite 515003 Battery Task Lamp in WhiteandOttlite High Definition 13W Craft Caddy Lampand I love them both for different reasons. This one is my favorite now. I prefer it for many reasons. The main reason is because it's a floor lamp and takes up no room at all on you work surface because it is on the floor and hangs over or can be aimed at your work area.
Well over a decade ago, I discovered Ott-Lites. My mom has been using the fold-up task lamp I gave her well over a decade ago. I've got three floor lamps, three fold-up task lamps (one with battery backup), a desk lamp, and two of the mini fold-up lamps - not sure what to call those, other than &#34;handy,&#34; as I used one for reading two weeks ago during a power outage.
This light provides an excellent source of clear, clean light with no heat factor for when we are using either mulitmeters, O-Scopes, or soldering irons to troubleshoot or enact repairs. Plus its flexibility makes getting the illumination where you want it so simple.After we get done with the physical and electrical parts of the machines, we have a person who comes in and does the painting of them with an airbrush.
use lamp to do puzzles, lamp was easy to assemble, excellent white lamp with  very little glare. Like the design of the lamp
this is my second ottlite so I knew what I was getting. my grandson wanted my other one so I had to get me a new because I do needle work all the time.
i looked at pricing here and at Joann's (with a coupon of course) and opted to get this light since it was a higher wattage. LOVE it
had this lamp for 4 years no problem...all of a sudden, the thing doesn't work. replaced bulb TWICE, still didn't work. ottlite says they have a replacement starter for $30 but no instructions; you have to get an electrician. decided to cut my losses and get a bulb for an existing regular lamp. installed bulb into my floor lamp....doesn't work. called ott lite, customer service stinks. all they could tell me was to take the bulb back.
great lighting for sewing etc. the price is too high (the 2 foot one is much cheaper) but what can you do?
etc. It does make me hot however, which is not great for the summer but might be nice in the winter. It seems to be sturdy and has not had a tilting problem. The bulb just seems like a flourescent one to me but I am not sure. I have only used it about a month and so far it works for me.
but i would avoid this one.
Answer: yes