]> Xiaoshu Wang The Ontology of Ontology This file defines an Ontology for classifying ontology. 2005-08 Vocabulary A vocabulary only functions as a namespace Concrete Ontology A concrete ontology has new resource under its own namespace 2 ProfileOntology Ontology A ProfileOntology merges a number of Ontologies but do not create new resources under its namespace. 1 Complex Ontology Complex ontology is a concrete ontology that imports another ontology. 0 Local Ontology A local ontology is an Ontology that does not import any other term.