ACTION: AnnotationPropert in owl.owl

Per my action of the previous telecon, I have added the stuff below to 
the owl.owl file. One consequence of this resolution is, by the way, 
that using annotation properties such as dc:creator in an OWL DL or Lite 
ontology  requires adding a triple
   dc:creator rdf:type owl:AnnotationProperty
to the ontology.

Guus

---------------------------------------------
<rdfs:Class rdf:ID="AnnotationProperty">
   <rdfs:subClassOf rdf:resource="&rdf;Property"/>
</rdfs:Class>

<rdf:Description rdf:about="&rdfs;label">
   <rdf:type rdf:resource="#AnnotationProperty"/>
</rdf:Description>

<rdf:Description rdf:about="&rdfs;comment">
   <rdf:type rdf:resource="#AnnotationProperty"/>
</rdf:Description>

<rdf:Description rdf:about="&rdfs;seeAlso">
   <rdf:type rdf:resource="#AnnotationProperty"/>
</rdf:Description>

<rdf:Description rdf:about="&rdfs;isDefinedBy">
   <rdf:type rdf:resource="#AnnotationProperty"/>
</rdf:Description>

plus statements of the form:
<rdf:type rdf:resource="#AnnotationProperty"/>
to the import and versioning properties.
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-- 
A. Th. Schreiber, SWI, University of Amsterdam,
http://www.swi.psy.uva.nl/usr/Schreiber/home.html