<http://caligraph.org/ontology/1980_in_heavy_metal_music>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/RestrictionHasValue_stylisticOrigin_Heavy%20metal%20music> .
<http://caligraph.org/ontology/1980_in_heavy_metal_music>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1980s_in_heavy_metal_music> .
<http://caligraph.org/ontology/1980_in_heavy_metal_music>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://www.w3.org/2002/07/owl#Thing> .
<http://caligraph.org/ontology/1980_in_heavy_metal_music>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/1980_in_heavy_metal_music>	<http://www.w3.org/2000/01/rdf-schema#label>	"1980 in heavy metal music" .