PREFIX ex: <https://example.org/linkml/hello-world/>
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#>

<https://schema.org/Person> a rdfs:Class ;
  rdfs:comment "Minimal information about a person" .

<https://schema.org/givenName> a rdf:Property ;
  rdfs:range xsd:string .

<https://schema.org/familyName> a rdf:Property ;
  rdfs:range xsd:string .

<http://xmlns.com/foaf/0.1/knows> a rdf:Property ;
  rdfs:range <https://schema.org/Person> .

ex:FriendlyPerson a rdfs:Class ;
  rdfs:comment "A person who actually knows someone" ;
  rdfs:subClassOf <https://schema.org/Person> .