]> The owl extension of PML2 ontology. It extends some concepts in PMLP PML2 owl extension version 0.2, Authors: Deborah L. McGuinness, Li Ding, Alyssa Glass, and Cynthia Chang Information (RDF instance) A kind of information whose content is an RDF instance. about instance The reference (URI) of an OWL instance referred by this information. The semantics with this concept is to select all triples describing this instance's URI. If hasURL is also specified, we will load RDF graph from the url ; otherwise, we will use the current file to load RDF graph. type of instance The type of an OWL instance. referenced subject The subject being used describing an instance. referenced property The property being used describing an instance. source of the previous version The document containing the previous version of the description of an instance. source of the current version The document containing the current version of the description of an instance. type of difference the type of the diff relation beteween the current version and the previous version. added instance The current version added new instance(s) to the previous version. deleted instance The current version deleted instance(s) from the previous version. update instance The current version updated instance(s) in the previous version. update instance by adding new property The current version updated instance(s) in the previous version by adding new properties. update instance by deleting property The current version updated instance(s) in the previous version by deleting properties. update instance by updating property value The current version updated instance(s) in the previous version by udpating property value.