representation of the direct semantics of OWL2

 The Web Ontology Language (OWL) is a family of knowledge representation
 languages for authoring ontologies.
 .
 Resource Description Framework (RDF) is a standard model for data
 interchange on the Web.
 .
 OWL::DirectSemantics provides a basic framework for representing the
 OWL 2 direct semantics model, and a translator to build that model from
 an RDF-based model.