@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ex: <http://example.org/> .

ex:ConceptShape
    a sh:NodeShape ;
    sh:targetClass skos:Concept ;
    sh:property [
        sh:path skos:prefLabel ;
        sh:datatype rdf:langString ;
        sh:minCount 1 ;
        sh:message "skos:prefLabel must be an rdf:langString (language-tagged literal)." ;
    ] ;
    sh:property [
        sh:path skos:definition ;
        sh:datatype rdf:langString ;
        sh:message "skos:definition must be an rdf:langString (language-tagged literal)." ;
    ] .