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: Why the sofa suddenly becomes swelling?
Document: Everything was fine till after one month a hole suddenly appears.Tried using the patch that comes with it, but doesn't work properly!
So far so good. just make sure you have an air pump or electric air pump and this couch inflates in seconds. also becomes a bed. Im enjoying this thing and its very comfortable.
i did not know that is filled with air i think it is regular sofa bed and i have kids
I got this sofa because I recently move-in and had nothing to sit on. Is very convenient and very comfortable.
love this sofa, not for a house with cats... we have had to patch it, but it is holding up great. very comfy to sleep on. great shipping
This sofa is awesome! It's extraordinarily comfortable and relaxing to both sit and sleep on. I'm so glad that I purchased it.
This Sofa only works  for  3 months ,after  the couch is deflated, and could not be fixed very bad quality of these products
My daughter and her friends love the sofa. It's perfect for her dorm room. Would love it if it came with a pump.
For a temporary sofa bed, this is perfect. Perfect for my apartment. It is very easy to inflate and to fold/unfold. Very comfortable.
I move a lot  and I was tired of carrying heavy furniture, and this sofa came to my rescue, it's comfortable to.
Answer: yes