3 mishnayot! Each about selling different properties, where the details of the sale are not specified. First, a courtyard. (if the details are specified, or if the seller says: "I'm selling you everything that is therein," then those sales are simpler, as per the stipulation). Second, an olive press, and third, a bath house. Without specification, the attached portions are all part of the sale, and the movable items are not.