@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
@prefix c:	<http://www.w3.org/2002/12/cal/icaltzd#> .
@prefix sioc:	<http://rdfs.org/sioc/ns#> .
c:VEVENT	rdfs:subClassOf	sioc:Item .