> Do you know any properly working tool for such a conversion of
> RDF into OWL, that changes rdfs:Class into owl:Class, rdf:Property
> into owl:ObjectProperty or owl:DataProperty etc.
For what it's worth, not long ago I did this on a fairly big ontology
using XSLT, but it relied on specific predictable structures in the
doc (range Literal is handy for ObjectProperty/DataProperty ;-). In
the general case I'm not sure this could be fully automated.