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: Wall charger
Document: It does the job, at least until the battery dies. I had three replacements in less than  a year. That's one band every 4 months. I hope they had fixed this in the newer models
Answer: no