grace:source_object

@prefix grace: <https://w3id.org/grace/ontology/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

grace:source_object a owl:ObjectProperty ;
    rdfs:label "source object"@en ;
    rdfs:domain [ a owl:Class ;
            owl:unionOf ( grace:entry grace:archive grace:anything ) ] ;
    rdfs:range grace:source ;
    rdfs:subPropertyOf grace:refers_to .