PREFIX ex: <http://example.org/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

<Person> {
  a ["Person"] ;
  ex:name xsd:string ;
  ex:address {
    ex:street xsd:string ;
    ex:houseNumber xsd:string
  } ;
  ex:hasChildren xsd:boolean ;
  ex:numberOfHouses xsd:integer
}