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This page is for discussion and development of an OWL Ontology for vCard.

The latest IETF vCard V.4 is documented in RFC6350

The lasted Working Draft is

The corresponding RDF/OWL Ontology

Discussion is undertaken on the SWIG email list.

The current editors are Renato Iannella and James McKinney

Feedback/Updates (to be addressed in next release)

In the examples of RDFa, Turtle and JSON-LD in section 3, vcard:hasValue has a literal value which should be a URI (as an ObjectProperty)
Update JSON text and link to json file to serve (see
Add  lang (en) to all labels and comments also add a rdfs:definedBy pointing the ontology itself to every concept
Remove the deprecated statements, add comment that they have consistently named equivalents, along with equivalentProperty/equivalentClass axioms (only deprecate Agent, Class, long, lat, mailer)
Add gYear to range for birthdate and anniversary (see

Feedback/Updates (addressed in Sept 2013 WD)

Include JSON Example [1]
If we keep the same URI namespace, add equivalent properties/classes (where it makes sense) [2]
Add Appendix with a mapping to old terms (and a rationale) and deprecated terms
Add a "+" before the country code in the telephone examples
Change datatype for telephone to union of xsd:string and xsd:anyURI so both can appear (Michael Angstadt, ietf)
Add more description for the purpose of the relational (v direct) properties. See [3]
Remove the Domains from all the direct properties
Remove the dp: op: class: prefixes from the Tables
Section discussing the relationship between this and existing vocabularies such as foaf and ORG.
Fix up all labels...especially "has"
Add descriptive text to the Examples explaining why we used the relations/direct approach [4]
Remove mailto: from the Examples
Fix Location class - geo and/or address properties
Fix OrganizationName label [5]
Explicit link to RDFS/OWL version (as Turtle and RDF/XML) - independent of namespace issue.