Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: How do you get the back light to turn on? The front light works but the rear light doesc\\
Document: A great helmet with lighting in front and behind. The back lights are amber, red, both colors together, or blinking. The visor light provides surprising visibility in whichever direction you look. An unbelievable price even with the shipping included.
Comfortable Junior sized helmet, more or less 24&#34; head circumference. Cool front/rear lights, easy to distinguish  far away. Front lights are a sort of forward lantern. Very good item for the price.
I was really looking forward to the helmet. The product arrived much earlier then its estimated delivery date but the problem is it turned out that the rear light on the helmet isn't working and it pisses me off....
I ride on a trail in a park and sometimes I there as it's getting dark. The lights on this helmet definitely help me see and be seen. It fits very nice as well, and I love the fact that you can tighten and loosen it in the back as I wish.
Easily adjustable and stylish. Looking forward to trying the light. Many bike helmets just aren't that comfortable - this one is.
This product is undersized. It fits my 4 year old grandchild - not me. It sits completely atop the head - offering inadequate protection to the entire head. The plastic size adjustment straps are so cheaply made they will break at the slightest impact. Very uncomfortable fit. Also, not made in USA.
Nice helmet.Lights are a great safety feature in treed trails where it tends to be dull. The colors are unique and the helmet is a good fit and comfortable.Chargeable lights would be better but it remains to be seen if the batteries will hold up.
Drivers are so careless and i'm always worried when i go bike riding in the early mornings that someone will hit me. This has helped me to relax and enjoy my bike ride.
Answer: no