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