@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix test: <http://www.daml.org/2003/06/ruletests/test-ont#> .
@prefix : <#> .

<> a test:Test;
   owl:versionInfo "$Id: subclass-2.n3,v 1.1 2003/06/24 22:18:05 mdean Exp $";
   rdfs:comment "extend subclass-1 with a subClassOf".

:Mammal a owl:Class .

:Dog a owl:Class;
  rdfs:subClassOf :Mammal .

:fido a :Dog .

{ :fido a :Mammal }
=> 
{ <> test:successful "true" }.