<http://caligraph.org/ontology/Porcupine_Tree_album>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Psychedelic_rock_album_by_English_artists> .
<http://caligraph.org/ontology/Porcupine_Tree_album>	<http://www.w3.org/2000/01/rdf-schema#label>	"Porcupine Tree album" .
<http://caligraph.org/ontology/Porcupine_Tree_album>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Progressive_rock_album_by_English_artists> .
<http://caligraph.org/ontology/Porcupine_Tree_album>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Porcupine_Tree_albums> .
<http://caligraph.org/ontology/Porcupine_Tree_video_album>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Porcupine_Tree_album> .
<http://caligraph.org/ontology/Porcupine_Tree_album>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Porcupine_Tree_album>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Experimental_rock_album_by_English_artists> .
<http://caligraph.org/ontology/Porcupine_Tree_live_album>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Porcupine_Tree_album> .
<http://caligraph.org/ontology/Porcupine_Tree_compilation_album>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Porcupine_Tree_album> .