@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
@prefix dc:	<http://purl.org/dc/elements/1.1/> .

<http://purl.org/dc/terms/extent>
	rdfs:subPropertyOf	dc:format .
<http://purl.org/dc/terms/format>
	rdfs:subPropertyOf	dc:format .
<http://purl.org/dc/terms/medium>
	rdfs:subPropertyOf	dc:format .