inheres in at all times quality of at all times qualityOfAt q-of_at Alan Ruttenberg: This is a binary version of a ternary time-indexed, instance-level, relation. The BFO reading of the binary relation 'quality of at all times@en' is: forall(t) exists_at(x,t) -> exists_at(y,t) and 'quality of@en(x,y,t)'. (iff (qualityOfAt a b t) (and (Quality a) (IndependentContinuant b) (not (SpatialRegion b)) (specificallyDependsOnAt a b t))) // axiom label in BFO2 CLIF: [056-002] b quality_of c at t = Def. b is a quality & c is an independent continuant that is not a spatial region & b s-depends_on c at t. (axiom label in BFO2 Reference: [056-002]) quality