instrucionalobjects.owl:requires leaf node

@prefix : <http://www.dfki.de/~cullrich/instrucionalobjects.owl#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

:requires a owl:ObjectProperty,
        owl:TransitiveProperty ;
    rdfs:comment "The described resource requires the referenced resource to support its function, delivery, or coherence of content."^^xsd:string ;
    rdfs:domain :Fundamental ;
    rdfs:range :Fundamental ;
    owl:inverseOf :isRequiredBy .