<http://caligraph.org/ontology/Tributary_of_the_Ruhr>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Tributary_of_the_Rhine> .
<http://caligraph.org/ontology/Tributary_of_the_Ruhr>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Tributaries_of_the_Ruhr> .
<http://caligraph.org/ontology/Tributary_of_the_Ruhr>	<http://www.w3.org/2000/01/rdf-schema#label>	"Tributary of the Ruhr" .
<http://caligraph.org/ontology/Tributary_of_the_M%C3%B6hne>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Tributary_of_the_Ruhr> .
<http://caligraph.org/ontology/Tributary_of_the_Lenne>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Tributary_of_the_Ruhr> .
<http://caligraph.org/ontology/Tributary_of_the_Volme>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Tributary_of_the_Ruhr> .
<http://caligraph.org/ontology/Tributary_of_the_Ruhr>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .