You are correct that in the xmlns namespace definitions in the xml < http://viaf.org/viaf/231063554/rdf.xml> references a namespace that is no longer used in the output. There is a single commented out reference to ' viaf:NameAuthorityCluster' in the output. This post covers the change that deprecated the use of this: http://outgoing.typepad.com/outgoing/2011/04/changes-to-viafs-rdf.html From the other xmlns definitions it can be seen that use is made of void, owl, foaf, skis-xl, skis, RDA ElementsGR2, FRBRentitiesRDA to describe VIAF resources. I'll pass this on to some of the team behind VIAF to see if they have further comment ~Richard. On 7 April 2014 23:04, Eric Lease Morgan <[log in to unmask]> wrote: > On Apr 7, 2014, at 10:52 PM, Richard Wallis < > [log in to unmask]> wrote: > > > Is this what you are looking for: http://viaf.org/viaf/data/ > > Alas, no, not really. I'm looking for an RDF file listing the classes and > properties used by VIAF. VIAF can return RDF for specific entities, as in > curl: > > curl -L -H "accept: application/rdf+xml" http://viaf.org/viaf/231063554/ > > Upon what RDF schema is this output based? The "header" of the output > alludes to the following URI, but it returns an error: > > http://viaf.org/ontology/1.1/# > > -- > Eric Morgan > -- Richard Wallis Founder, Data Liberate http://dataliberate.com Tel: +44 (0)7767 886 005 Linkedin: http://www.linkedin.com/in/richardwallis Skype: richard.wallis1 Twitter: @rjw