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: what color would you recommend for nighttime walking?
Document: Easy to attach to the dog collar, easy to turn on/off, this bright light is highly visible to traffic. It is also not annoying - easy on my eyes so I can still see (not blinded in flashing mode as would be the case with a bright steady light). I wonder if the dog likes the light, too, when she is investigating a really good smell up close?
Answer: no