<http://caligraph.org/ontology/Airport_in_DuPage_County,_Illinois>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Airport_in_the_Chicago_metropolitan_area> .
<http://caligraph.org/ontology/Airport_in_DuPage_County,_Illinois>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Airports_in_DuPage_County,_Illinois> .
<http://caligraph.org/ontology/Airport_in_DuPage_County,_Illinois>	<http://www.w3.org/2000/01/rdf-schema#label>	"Airport in DuPage County, Illinois" .
<http://caligraph.org/ontology/Airport_in_DuPage_County,_Illinois>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Transportation_building_or_structure_in_DuPage_County,_Illinois> .
<http://caligraph.org/ontology/Airport_in_DuPage_County,_Illinois>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .