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: what are the little black caps that come with lights for?
Document: The picture is a little misleading. Unless you're going 20+ mph you wheels are not going to look like the ones in the photo. Some of the caps are more sensitive that others. One of the green ones doesn't work that well. Also check your valves and make sure they aren't slanted in a way that prevents you from installing the lights. We had this issue on one of our bikes.
I'm enjoying these lights. They were a great value and I like that it come in a pack with multiple colors.
Fantastic little lights for my bicycle. I will definitely guy some more of these.Fast delivery too  and seem to be very well made.
All the lights look the same while they are in use. No matter. I still like it. It just gives your bike ride a little something extra while you're out at night. I would not recommend as the only thing you use for night time road travel tho!
I bought these for my daughter. She has been wanting to accessorize her bike with everything on the market ... she has seen her little friends with similar lights and was looking for something flashy for night ... well .. she found it...and boy are they flashy. The little lights are really bright. I loved that the price point was low so if she wants to replace them or buy more she can.
they look like they are GOING to be different colors, but all blue.Still, served their purpose of making the bikes more visible. Nice that they come with batteries for their low price.
These are a must for any bike rider who rides at night. Went for a bike ride with my brother in law at night and I am very impressed with how visible these simple valve caps make me when installed. Installation by the way is very easy as well. Great product
I got the valve caps for my sons bike for his birthday. He saw them while playing on the computer and thought they looked pretty cool, so I ordered them and put them on his bike. He loves them and they are really neat when he rides his bike in the parking lot at night.
I received this product in exchange for an honest review. These valve caps are not only a great safety product, but they look cool as well which is the main selling factor in having your kids put these on their bikes. They are very lightweight, so I'm not sure how long they will last, but so far mine all work fine.
These are awesome valve caps for adding a bit of &#34;flash&#34; to any of your tires- bike, motorcycle or car. I've got them on my car and they look so cool- and I love that they turn off when the car stops so I don't have to worry about &#34;turning them off&#34;. Thanks for the cool product!
Answer: yes