Has gender 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_gender a owl:FunctionalProperty,
        owl:ObjectProperty ;
    rdfs:label "Has gender"^^xsd:string ;
    owlready:python_name "gender"^^xsd:string ;
    rdfs:comment "For Person: This field is meant to capture the biological sex at birth of the Person. This field should not be used to study gender identity issues. Use the gender or sex value present in the data under the assumption that it is the biological sex at birth. If the source data captures gender identity it should be stored in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm54.html#observation) table. [Accepted gender concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=). Please refer to the [THEMIS repository](https://ohdsi.github.io/Themis/tag_gender_concept_id.html) for detailed conventions on how to populate this field."@en,
        "For Provider: This field represents the recorded gender of the provider in the source data. If given, put a concept from the gender domain representing the recorded gender of the provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=)."@en ;
    rdfs:domain [ a owl:Class ;
            owl:unionOf ( omop:Person omop:Provider ) ] ;
    rdfs:range omop:Concept ;
    omop:omop_cdm_name "person.gender_concept_id#2 AS Concept"^^xsd:string,
        "provider.gender_concept_id#260 AS Concept"^^xsd:string .