<http://caligraph.org/ontology/Building_or_structure_at_Heathrow_Airport>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Buildings_and_structures_at_Heathrow_Airport> .
<http://caligraph.org/ontology/Building_or_structure_at_Heathrow_Airport>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Building_or_structure_in_the_London_Borough_of_Hillingdon> .
<http://caligraph.org/ontology/Building_or_structure_at_Heathrow_Airport>	<http://www.w3.org/2000/01/rdf-schema#label>	"Building or structure at Heathrow Airport" .
<http://caligraph.org/ontology/Building_or_structure_at_Heathrow_Airport>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Railway_and_tube_station_serving_Heathrow_Airport>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Building_or_structure_at_Heathrow_Airport> .