Reasonner does not infer equivalent class based on restriction

François,

The above query queries only the default graph.

To query all named graphs you could write

select * { graph ?g {?s ?p ?o} }

To see how to manage Protege generated Ontologies I refer you to OWL RDF ontology uploaded as database but not visualizing in Explorer - #16 by charl

Please revert back with any questions

Thanks

Joe