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: Am also wondering if these give off heat? (Looking to use with Himalayan Salt Candleholders that need heat to bring out the health benefits.. )
Document: These are absolutely awful; the title and description says they have a flickering yellow light, but in fact they have a steady blue light. They're also dim and inconsistent (some are brighter than others). The centerpieces I'm making need a soft glow, and these candles promised a soft glow, but the blue light is creepy looking and cold and won't work at all. I'm extremely disappointed; if you're going for the yellow flickering warm look do not buy these.
Product is average, but having a screw in the back for battery compartment isn't good for people like me who like to leave the lights on 24/7 and need to change the batteries couple days. Also the build quality of the light (area that gives out light) is kinda flimsy compared to others I bought.
got these tea lights delivered on time and packaged neatly. i haven't used the lights for my event yet, but i took all out and tested- flickers without being fake looking or annoying. the color of the light is as shown in the picture not bright but low and yellow. they are perfect for what i wanted to accomplish so great!. only reason i didnt give these 5 stars was because its a little flimsy but at $7 i didn't expect otherwise.
They are exactly what I was looking for and they work and they are pretty.I also love the fact that they flicker.
These aren't bright enough to work in a tinted candle holder and are too obviously fake to use behind clear glass. The only use I have for them is for places where I don't want the heat to damage the things above it. For example, we have candle holders beneath electronics. I feel like even if guests see these fake candles in that location they will forgive it. Otherwise they would think they were ugly. Sorry fake candle makers...just not close to the real thing.
They provide a really nice soft light like candles without the heat or danger. No worries about falling asleep with these candles going! And while I only just bought them, the battery life seems pretty good so far. Haven't had to replace any batteries yet, and I've left these going overnight several times, so that is many hours of use. Obviously they last longer than actual tealight candles.I am very likely to purchase more of these, because for all the downsides, they are pretty neat!
I had intended to use these in all the windows of my 1930's Farm House this past Christmas, which was the Family Gathering place for Christmas 2009. However, you cannot leave them on 24-7, I barely saw the "flicker". They burned out too too fast for my need. Maybe I chose the wrong product for what I needed them for. So I can't be too critical of them. They do work well, and are handy to have. Just not for extended use....
We've used these candles in our wedding centerpieces. They make for a worry-free reception, not having to worry about flame. Also, one does not have to clean the wax out of the votives. And when the dance is over, you can take them home and use them throughout the house and even in your tent when camping.They are an excellent value.
We bought these tea lights to go in some Christmas decorations. I thought they would probably burn out after the first night of use (leaving them on approximately 2 - 3 hours in the evening). After a week of nightly use, they are still going strong. They also flicker when on, giving the appearance of a real flame. For the money, they work great. We paid $7.xx for 12 of them.
You can't use them in clear containers but they work with everything else. I particularly like them in those holiday red and green or whatever etched votive holders. And the best part is when the holidays are over....no wax clean up. Just pop 'em out and put them away. There's also no scent. Some scents can trigger raging headaches and spoil a great evening for you or your guest so I think that's great.
Answer: no