Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Can you buy a tube with a straight neck?
Document: We have used and abused these for over a year with no drop in performance. Camelbak may cost more, but the off brands will leave you with issues. Nobody wants a soaked pack, or to be out of water, after a long day's hike.
Answer: no