<http://dbpedia.org/resource/Category:Electromagnetism>	<http://www.w3.org/2004/02/skos/core#broader>	<http://dbpedia.org/resource/Category:Materials_science> .
<http://dbpedia.org/resource/Category:Electromagnetism>	<http://www.w3.org/2000/01/rdf-schema#label>	"Electromagnetism"@en .
<http://dbpedia.org/resource/Category:Electromagnetism>	<http://www.w3.org/2007/05/powder-s#describedby>	<https://covidontheweb.inria.fr:4443/about/id/entity/http/dbpedia.org/resource/Category:Materials_science> .