Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Do they stay in your ear when you are talking or chewing?The over the counter type I tried last would never stay in my ear.
Document: I began having a slight problem with hearing out of my left ear. Not wanting to lay out an astronomical amount of money for a hearing aid, I tried several &#34;over the counter&#34; hearing devices. They were either too bulky to stay in the ear or the battery drained before I got to work. This device fits nicely in the ear; I've never had a problem with it falling out.
This hearing amplifier does what is intended, it is not a prescription hearing aid but having tried a prescription aid I consider it to be very similar (but does not cost 1800 Euro) Any disadvantages such as amplifying all sound and hearing chewing etc are very little worse than the prescription type which I have tried. Ideal to amplify the TV. A very good buy for the money.
This product didn't last long. I used it the first day and it worked fine, a few days later I tried using them and they didn't work. batteries are good so i know it wasnt the batteries
this device amplifies background noise so much it makes understanding speach difficult. Volume is difficult to adjust and batteries don't last very long. I must admit that this is the first hearing device I have tried, but I expected to be able to understand TV better, not worse. If anything at all is running (fan, dishwasher, etc.) in the background forget understanding speach. Feedback is also a problem.
Pure amplification as advertised. Will never use again and would never resell or recommend for anyone else. I did not like them.
I have tried other hearing aids. even the normal ones you get from the doctor.these have adjustment for tone and volume just like the expensive one and they work great.frankly they surprised me on how well they work .it took me about three days to get the volume where it's like normal hearing.I started off at  about 3/4 volume and at that setting I could hear people talking at about 100 yards. I now use them at about 1/4setting and they are great .
what can I say they work good the only problem is they don't stay in your ear long and after a while they hurt your ear
I received the product, and neither ears were  in working order, the batteries they sent were  old, dead,and molded. I received a call from a  representative from the company who explained that they would make good on the purchase and I was to get a e-mail within 5-10 minutes from the call which I have never gotten the e-mail or a phone call back. This all took place over a week ago. The representative also wanted me to retract my 1st email to them.
I tried different batteries and got the same result. I wouldn't really recommend this product. Being a hunter myself, it would drive me crazy in the woods!
receipt & packaging very good - would not wear these out to big - but excellent for watching TV or listening to thecomputer -  batteries don't seem to last very long - but in general would buy them again -
Answer: yes