observable:lastName leaf node

@prefix observable: <https://unifiedcyberontology.org/ontology/uco/observable#> .
@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#> .

observable:lastName a owl:DatatypeProperty ;
    rdfs:label "lastName"@en ;
    rdfs:comment "The last name of a person."@en ;
    rdfs:domain observable:ContactFacet ;
    rdfs:range xsd:string .