Importing oel/rdf file in to ER/ Studio Data Architect 18.1

Hi All, 

I am trying to import Owl/ rdf filr. After importing using  one of the imporing wizard from below list tried "W3C Semantic Web Ontology (OWL/RDF) - New Beta bridge" to be specific. i a not able to see the entities or model in file.

Any one tried importing owl.rdf files before?