@prefix obo: <http://purl.obolibrary.org/obo/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

obo:BFO_0000146 a owl:Class ;
    rdfs:label "two-dimensional continuant fiat boundary"@en ;
    obo:BFO_0000179 "2d-cf-boundary" ;
    obo:BFO_0000180 "TwoDimensionalContinuantFiatBoundary" ;
    obo:IAO_0000600 "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 ;
    obo:IAO_0000602 "(iff (TwoDimensionalContinuantFiatBoundary a) (and (ContinuantFiatBoundary a) (exists (b) (and (TwoDimensionalSpatialRegion b) (forall (t) (locatedInAt a b t)))))) // axiom label in BFO2 CLIF: [033-001] " ;
    rdfs:isDefinedBy obo:bfo.owl ;
    rdfs:subClassOf obo:BFO_0000140 .