<http://caligraph.org/ontology/Missing_U-boat_of_World_War_I>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Missing_U-boat> .
<http://caligraph.org/ontology/Missing_U-boat_of_World_War_II>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Missing_U-boat> .
<http://caligraph.org/ontology/Missing_U-boat>	<http://www.w3.org/2000/01/rdf-schema#label>	"Missing U-boat" .
<http://caligraph.org/ontology/Missing_U-boat>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Missing_U-boats> .
<http://caligraph.org/ontology/Missing_U-boat>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Sunken_U-boat> .
<http://caligraph.org/ontology/Missing_U-boat>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Missing_U-boat>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Missing_submarine> .