<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Defunct_radio_networks_in_the_United_States> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Defunct_radio_network_in_the_United_States> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/United_States_radio_network> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Progressive_Broadcasting_System> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Progressive Broadcasting System" .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/DI.FM> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Radio_stations_established_in_1950> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/2000/01/rdf-schema#label>	"Progressive Broadcasting System" .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Radio_station_established_in_1950> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_United_States_radio_networks> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Radio_station_disestablished_in_1951> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Progressive Radio Network" .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Defunct_radio_stations_in_the_United_States> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Radio_stations_disestablished_in_1951> .
<http://caligraph.org/resource/Progressive_Broadcasting_System>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Defunct_radio_station_in_the_United_States> .