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: Are these bright enough to see on the sidewalk and is the light dispersion narrow or wide? Thanks.
Document: This light is great construction and very bright! I love how there is a zoom-able lens. You can use it for very bright long narrow distance beam-shot, all the way to a wide beam for the road in front of you! It puts my other cheap led lights to shame. Of course I'm the type who gets sucked into these 9 led bulb flashlights you find at gas stations! Never again!!! Thanks Bright Eyes!
Definitely incredible lights. Very bright. Like the fact that there are several settings that allow you to focus the light on a particular area or zoom it out to see a wide, wider and widest surroundings. It is actually a flash light and therefore can be removed and carried in hand, should you have to leave your bike. The bonus back lights are bright as well. I highly recommend them. I put a set on two of my bikes. My husband purchased the BOGO as well.
I like to keep it about half way betweeen the wide angle and spot adjustment.I bought mine after a friend showed me his. I was really impressed with the build quality. I'm pretty sure I could drive my SUV over it, and it would be fine. I'm waiting to see how long the batteries last, but so far, so good.
But I figured that they're really trying. And seemed quite genuine enough. No, I wasn't paid to write this review. Yes, I bought this item.If you're looking for a small sized flash light / headlight that's bright but not blindingly so, then this is definitely a good one to have.
Lights are bright and durable. Can easily be seen from 1/2 mile away. Can literally blind people with your bike light if you wanted to!! Vendor was very quick to solve a small issue I had. Thanks! !
Love this headlight/flashlight- it's very bright and depth of light coverage can be adjusted to your needs. And the fact that Don threw in an extra one of each was a huge bonus- thank you! Appreciate your attention to detail and handwritten notes of thanks to us! :)
Very bright lights, I love that they are removable so I don't have to worry about them getting stolen.thanks!
It slides out of its holder, and I can easily take it with me. It is a good size for sliding into my pocket, or putting it in my bike bag.The bike mount is also very sturdy, and fits different areas of my handle bars. This is great for repositioning the light beam itself.Overall, this is a great product. I feel like I will get a lot of use out of this bike light. And, I can never have enough light.
I would highly recommend this light to others as a great balance between quality and cost. I' m not easily impressed but based on  other reviews I gave this package a shot. It shipped very fast and arrived in a nice designer box. The lights were easy to install and work great. The flashlights give adequate forward visibility and the tail lights really light you up for others to see.I had ordered two sets for 4 bikes.
Great headlight and AWESOME customer service! I loved the headlight but gave 4 stars and commented on the quality of the free back light and wheel lights that came with it. About a week later, I received 2 awesome new back lights with a handwritten note from the seller! Highly recommend this product and seller. Thanks! :-)
Answer: yes