A sofa is a piece of furniture that a few people can comfortably sit on together. A sofa is a piece of furniture that a few people can comfortably sit on together. A sofa is a piece of furniture that a few people can comfortably sit on together. A sofa is a piece of furniture that a few people can comfortably sit on together. A sofa is a piece of furniture that a few people can comfortably sit on together. A sofa is a piece of furniture that a few people can comfortably sit on together. A sofa is a piece of furniture that a few people can comfortably sit on together.