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 vest be deflate?
Document: We are happy with the vests and will get more use out of the vests when we go back to mexico again later this year
Vests look pretty rugged. With boys, 5, 7, and 9 they will take some abuse. Looking forward to trying them out this summer snorkeling with them. They arrived just when they were supposed to, very pleased.
My son is not a great swimmer so I got it for him for our hawaii trip. He loved it and it gave him the confidence he needed to swim all around the reefs by our hotel
Answer: no