@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
@prefix foaf:	<http://xmlns.com/foaf/0.1/> .
@prefix virtrdf:	<http://www.openlinksw.com/schemas/virtrdf#> .
foaf:accountName	rdfs:subPropertyOf	virtrdf:label .