@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rgml: <http://purl.org/puninj/2001/05/rgml-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix : <http://purl.org/puninj/2001/05/rgml-schema#> .

:Graph a rdfs:Class .
:Node a rdfs:Class .
:Edge a rdfs:Class .

:label rdfs:domain :Graph, :Node, :Edge; rdfs:range xsd:string.
:directed rdfs:domain :Graph, :Edge; rdfs:range xsd:boolean .
:nodes rdfs:domain :Graph, :Edge; rdfs:range rdf:Node.
:edges rdfs:domain :Graph; rdfs:range rdf:Edge .
:graphs rdfs:domain :Graph; rdfs:range rdf:Graph .
:weight rdfs:domain :Node, :Edge; rdfs:range xsd:string.
:source rdfs:domain :Edge; rdfs:range :Node.
:target rdfs:domain :Edge; rdfs:range :Node.