. "(iff (TwoDimensionalContinuantFiatBoundary a) (and (ContinuantFiatBoundary a) (exists (b) (and (TwoDimensionalSpatialRegion b) (forall (t) (locatedInAt a b t)))))) // axiom label in BFO2 CLIF: [033-001] " . "TwoDimensionalContinuantFiatBoundary" . . . "2d-cf-boundary" . "two-dimensional continuant fiat boundary"@en . . "BFO:0000146"^^ . . . . "a two-dimensional continuant fiat boundary (surface) is a self-connected fiat surface whose location is defined in relation to some material entity. (axiom label in BFO2 Reference: [033-001])"@en . . . . . .