<http://caligraph.org/ontology/Cast_iron_aqueduct>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Aqueduct> .
<http://caligraph.org/ontology/Cast_iron_aqueduct>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Cast_iron_aqueducts> .
<http://caligraph.org/ontology/Cast_iron_aqueduct>	<http://www.w3.org/2000/01/rdf-schema#label>	"Cast iron aqueduct" .
<http://caligraph.org/ontology/Cast_iron_aqueduct>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .