None of these triples should be generated in RDFa 1.0.

Vocabulary Prefixes GRDDL MA OWL RDF RDFa RDFS RIF SKOS SKOS-XL WDR VOID WDRS XHV XML XSD
Widely Used prefixes CC CTAG DC DCTERMS FOAF GR ICAL OG REV SIOC V VCARD Schema
Vocabulary Terms DescribedBy