<http://caligraph.org/ontology/1990s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/1930s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/1970s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/1960s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/20th-century_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Car> .
<http://caligraph.org/ontology/1900s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/1920s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/1910s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/20th-century_car>	<http://www.w3.org/2000/01/rdf-schema#label>	"20th-century car" .
<http://caligraph.org/ontology/20th-century_car>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:20th-century_cars> .
<http://caligraph.org/ontology/1940s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/20th-century_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Vehicle_introduced_in_the_20th_century> .
<http://caligraph.org/ontology/1950s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/1980s_car>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_car> .
<http://caligraph.org/ontology/20th-century_car>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .