<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Oil_companies_by_country> .
<http://caligraph.org/ontology/Defunct_oil_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/2000/01/rdf-schema#label>	"Oil company" .
<http://caligraph.org/ontology/Multinational_oil_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Oil_companies> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Oil_companies_by_continent> .
<http://caligraph.org/ontology/Oilfield_services_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company_of_Africa>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Petroleum_organization> .
<http://caligraph.org/ontology/Synthetic_fuel_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_pipeline_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company_of_Australia>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Non-renewable_energy_company> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_and_gas_company> .
<http://caligraph.org/ontology/Oil_company_of_Montenegro>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Oil_company_of_Asia>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company_of_North_America>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Oil_company_of_Europe>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .
<http://caligraph.org/ontology/Petrochemical_company>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Oil_company> .