<http://caligraph.org/ontology/Album_recorded_at_Sigma_Sound_Studios>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Album_recorded_in_the_United_States> .
<http://caligraph.org/ontology/Album_recorded_at_Sigma_Sound_Studios>	<http://www.w3.org/2000/01/rdf-schema#label>	"Album recorded at Sigma Sound Studios" .
<http://caligraph.org/ontology/Album_recorded_at_Sigma_Sound_Studios>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Album_recorded_at_Sigma_Sound_Studios>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Albums_recorded_at_Sigma_Sound_Studios> .