<http://caligraph.org/ontology/Patrol_boat_class>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Minor_warship_class> .
<http://caligraph.org/ontology/Uragan-class_guard_ship>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Patrol_boat_class> .
<http://caligraph.org/ontology/Patrol_boat_class>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Patrol_boat_classes> .
<http://caligraph.org/ontology/Patrol_boat_class>	<http://www.w3.org/2000/01/rdf-schema#label>	"Patrol boat class" .
<http://caligraph.org/ontology/Keris-class_littoral_mission_ship>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Patrol_boat_class> .
<http://caligraph.org/ontology/Patrol_boat_class>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Cyclone-class_patrol_ship>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Patrol_boat_class> .