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Person-with-friend Example Context Ontology
person-with-friend.owl
In this ontology we define a pwf:Person (a kind of Digital Subject class and a pwf:friend (a kind of higgins:attribute) property. (For the sake of simplicity in this example we've rolled our own "friend" relationship; in practice we'd try to build off existing schemas like FOAF, etc.)
The entire ontology is here. As you'll see the friend property is defined:
<owl:ObjectProperty rdf:ID="friend"> <rdfs:subPropertyOf rdf:resource="&higgins;#attribute"/> <rdfs:domain rdf:resource="http://www.eclipse.org/higgins/ontologies/2006/higgins#DigitalSubject"/> <rdfs:range rdf:resource="http://www.eclipse.org/higgins/ontologies/2006/higgins#SubjectRelationship"/> </owl:ObjectProperty>
Instance Data
<higgins:NormalizedStringSimpleAttribute rdf:about="urn:mary-firstname"> <higgins:normalizedStringSimpleValue rdf:datatype="&xsd;normalizedString">Mary</higgins:normalizedStringSimpleValue> </higgins:NormalizedStringSimpleAttribute> <higgins:NormalizedStringSimpleAttribute rdf:about="urn:mary-surname"> <higgins:normalizedStringSimpleValue rdf:datatype="&xsd;normalizedString">Ruddy</higgins:normalizedStringSimpleValue> </higgins:NormalizedStringSimpleAttribute> <higgins:SubjectRelationship rdf:about="urn:sr-to-bob"> <higgins:contextURI rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://example.com/robertjones/public-business-card</higgins:contextURI> <higgins:subjectCUID>bob</higgins:subjectCUID> </higgins:SubjectRelationship>