<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Popham_panel> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Aviation_communication> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:20th-century_inventions> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/2000/01/rdf-schema#label>	"Popham panel" .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/20th-century_invention> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Optical_communication> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Popham panel" .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Optical_communications> .
<http://caligraph.org/resource/Popham_panel>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Aviation_communications> .