Thanks Holger, thats very helpful.

Is there an easy way (sparql query) to determine if a class does not
have a named superclass?

-J

On Jun 30, 3:51 pm, Holger Knublauch <[email protected]> wrote:
> Hi J,
>
> TopBraid does some background inferencing to infer extra superclass  
> triples. This makes sure that any class has at least one named  
> superclass, so that it can be reached from a tree traversal. You would  
> need to either re-implement this logic yourself, or activate  
> inferencing on sesame, or simply include the inference graph when you  
> export the TBC to Sesame. Making matters a bit more complicating, the  
> triple
>
> owl:Thing rdfs:subClassOf rdfs:Resource
>
> has been added by TopBraid into its system triples model, which is  
> also imported by any project but cannot easily be exported as well.  
> So, in this case I would recommend to replicate this same triple in  
> your own file before exporting to Sesame, from the form of owl:Thing.
>
> Regards,
> Holger
>
> On Jun 30, 2009, at 12:39 PM, J-MAN wrote:
>
>
>
> > We are using TopBraid to build ontologies and data for our
> > application.  We then move the data & onts to our sesame knowledge
> > store.
>
> > Our RDF works fine inside topbraid composer, but when we move it into
> > our sesame store, we are having problems because owl:Thing is not
> > being inferred as the base class.
>
> > How do you infer a class is a direct subclass of owl:Thing?  Without
> > specifically asserting it?
>
> > Any suggestions?
>
> > Thanks
>
> > -J
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