part_of part of part of part of continuant at some time part of continuant at all times that whole exists realizable entity quality quality BFO:0000019 bfo (forall (x) (if (Quality x) (SpecificallyDependentContinuant x))) // axiom label in BFO2 CLIF: [055-001] Quality If an entity is a quality at any time that it exists, then it is a quality at every time that it exists. (axiom label in BFO2 Reference: [105-001]) a quality is a specifically dependent continuant that, in contrast to roles and dispositions, does not require any further process in order to be realized. (axiom label in BFO2 Reference: [055-001]) quality (forall (x) (if (exists (t) (and (existsAt x t) (Quality x))) (forall (t_1) (if (existsAt x t_1) (Quality x))))) // axiom label in BFO2 CLIF: [105-001] quality the ambient temperature of this portion of air the color of a tomato the length of the circumference of your waist the mass of this piece of gold. the shape of your nose the shape of your nostril specifically dependent continuant