@prefix rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
@prefix ex:	<http://www.example.org/schema#>.
@prefix in:	<http://www.example.org/instance#>.


in:a rdf:type rdfs:Class;
    rdfs:subClassOf in:b.
    
in:b rdf:type rdfs:Class;
    rdfs:subClassOf in:c.

in:d rdf:type rdfs:Class;
    rdfs:subClassOf in:e.

    
in:e rdf:type rdfs:Class;
    rdfs:subClassOf in:f.

ex:a rdf:type rdf:Property;
    rdfs:range in:a;
    rdfs:domain in:d.
