<http://caligraph.org/ontology/1940s_helicopter>	<http://www.w3.org/2000/01/rdf-schema#label>	"1940s helicopter" .
<http://caligraph.org/ontology/1940s_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Aircraft> .
<http://caligraph.org/ontology/1940s_British_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1940s_helicopter> .
<http://caligraph.org/ontology/1940s_helicopter>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/1940s_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Helicopter> .
<http://caligraph.org/ontology/1940s_Austrian_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1940s_helicopter> .
<http://caligraph.org/ontology/1940s_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/RestrictionHasValue_type_Helicopter> .
<http://caligraph.org/ontology/1940s_United_States_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1940s_helicopter> .
<http://caligraph.org/ontology/1940s_French_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1940s_helicopter> .
<http://caligraph.org/ontology/1940s_helicopter>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1940s_helicopters> .
<http://caligraph.org/ontology/1940s_Soviet_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1940s_helicopter> .
<http://caligraph.org/ontology/1940s_German_helicopter>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1940s_helicopter> .