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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. :)