<http://caligraph.org/ontology/Type_U_57_submarine>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Submarine_of_the_Imperial_German_Navy> .
<http://caligraph.org/ontology/Type_U_57_submarine>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Type_U_57_submarines> .
<http://caligraph.org/ontology/Type_U_57_submarine>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Type_U_57_submarine>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/RestrictionHasValue_class_SM%20U-57> .
<http://caligraph.org/ontology/Type_U_57_submarine>	<http://www.w3.org/2000/01/rdf-schema#label>	"Type U 57 submarine" .