1@prefix :  <http://example.org/x/> .
2@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
3@prefix owl: <http://www.w3.org/2002/07/owl#> .
4
5_:sparql-dl a owl:Ontology .
6
7:x rdf:type owl:NamedIndividual .
8:a rdf:type owl:NamedIndividual .
9:c rdf:type owl:Class .
10:d rdf:type owl:Class .
11:p rdf:type owl:ObjectProperty .
12
13 :x rdf:type :c.
14 :x rdf:type :d.
15 :x rdf:type _:x.
16 _:x rdf:type owl:Restriction.
17 _:x owl:onProperty :p.
18 _:x owl:someValuesFrom :c .
19 :x :p :a .
20 :a rdf:type :c .
21
22
23