Has class leaf node

@prefix omop: <https://w3id.org/omop/ontology/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix owlready: <http://www.lesfleursdunormal.fr/static/_downloads/owlready_ontology.owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

omop:has_class a owl:FunctionalProperty,
        owl:ObjectProperty ;
    rdfs:label "Has class"^^xsd:string ;
    owlready:python_name "class"^^xsd:string ;
    rdfs:comment """For Concept: The attribute or concept class of the
Concept. Examples are 'Clinical Drug',
'Ingredient', 'Clinical Finding' etc."""@en,
        """For Note: A Standard Concept Id representing the HL7 LOINC
Document Type Vocabulary classification of the note.
Map the note classification to a Standard Concept. For more information see the ETL Conventions in the description of the NOTE table. [AcceptedConcepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&conceptClass=Doc+Kind&conceptClass=Doc+Role&conceptClass=Doc+Setting&conceptClass=Doc+Subject+Matter&conceptClass=Doc+Type+of+Service&domain=Meas+Value&page=1&pageSize=15&query=). This Concept can alternatively be represented by concepts with the relationship 'Kind of (LOINC)' to [706391](https://athena.ohdsi.org/search-terms/terms/706391) (Note)."""@en ;
    rdfs:domain [ a owl:Class ;
            owl:unionOf ( omop:Concept omop:Note ) ] ;
    omop:omop_cdm_name "concept.concept_class_id#366 AS ConceptClass"^^xsd:string,
        "note.note_class_concept_id#184 AS Concept"^^xsd:string .