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: Is this model spring opening?
Document: The build of the knife feels solid a is a good value. However, the &#34;assisted opening&#34; needs some assistance to open all the way. Also the paint was rubbed off on some areas. This is the 5th one of these knives that I bought and certainly the worse of the bunch.
Answer: no