I'll quote Mike (and most common approaches to the problem):  

	Don't Do That Then.
:)

Rob

On Thu, 2009-05-14 at 13:18 +0100, Alexander Johannesen wrote:
> On Thu, May 14, 2009 at 17:35, Rob Sanderson <[log in to unmask]> wrote:
> > For example, the owl:sameAs predicate is used to express that the
> > subject and object are the same 'thing'.  Then the application can infer
> > that if a owl:sameAs b, and a x y, then b x y.
> 
> Yes, but there's a snag; as RDF work only on the URI resource level
> (no added semantics to the typification of the URI resource) if
> someone does an owl:sameAs between an identifier of a thing and a
> locator of a thing (a locator being the resource itself as opposed to
> being an identifier; example are you talking about Sun Corp
> (http://sun.com/) or are you talking about their website
> (http://sun.com/)) you can get a nasty case of integrity rot, and I've
> not seen any proposals to address this issue (the RDF world is
> essentially assuming modeling from the viewpoint of everything being
> true).
> 
> I guess Mike don't like RDF *nor* Topic Maps now. :)