snap:ObjectBoundary leaf node

@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix snap: <http://www.ifomis.org/bfo/1.1/snap#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

snap:ObjectBoundary a owl:Class ;
    rdfs:label "object_boundary"^^xsd:string ;
    rdfs:comment "Comment: Boundaries are theoretically difficult entities to account for, however the intuitive notion of a physical boundary as a surface of some sort (whether inside or outside of a thing) will generally serve as a good guide for the use of this universal."^^xsd:string,
        "Definition: An independent continuant [snap:IndependentContinuant] that is a lower dimensional part of a spatial entity, normally a closed two-dimensional surface. Boundaries are those privileged parts of object [snap:Object] entities that exist at exactly the point where the object [snap:Object] is separated off from the rest of the existing entities in the world."^^xsd:string,
        "Examples: the surface of the skin, the surface of the earth, the surface of the interior of the stomach, the outer surface of a cell or cell wall"^^xsd:string,
        "Synonyms: substance boundary"^^xsd:string ;
    rdfs:subClassOf snap:IndependentContinuant ;
    owl:disjointWith snap:FiatObjectPart,
        snap:Object,
        snap:ObjectAggregate,
        snap:Site .