> John's comment relates to (at least) the axioms on "publisher":
>
> [[
> <owl:ObjectProperty rdf:about="http://dbpedia.org/ontology/publisher";>
> <rdfs:label xml:lang="en">publisher</rdfs:label>
> <rdfs:domain>
> <owl:Class>
> <owl:unionOf rdf:parseType="Collection">
> <owl:Class rdf:about="Work"/>
> <owl:Class rdf:about="Book"/>
> <owl:Class rdf:about="Newspaper"/>
> </owl:unionOf>
> </owl:Class>
> </rdfs:domain>
> <rdfs:range rdf:resource="http://dbpedia.org/ontology/Person"/>
> <rdfs:range rdf:resource="http://dbpedia.org/ontology/Company"/>
> </owl:ObjectProperty>
> ]]
>
> The semantics of range mean that you have essentially asserted that
> the range of published is [Person and Company]. If you want the
> union, you'll have to explicitly use the unionOf constructor here.
Thanks Sean, yup that's the one. There were a few other cases of that elsewhere
as well. This is also a good example of where (IMHO) the domain was perhaps
over specified. For example all sorts of things could have publishers, and not
the ones listed here. I worry that if you reuse DBpedia "publisher" elsewhere
you could get some undesired inferences.
cheers,
John
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