Properties for vocabulary provenance metadata

prov:specializationOf comes into play to relate revisions of the same vocabulary. The specific revision of the vocabulary is prov:specializationOf for the overarching vocabulary.

prov:wasGeneratedBy connects specific revisions to the ‘provenance activity’ (a prov:Activity, unrelated to an xAPI Activity) that generated them. That provenance activity will often be a working group or community of practice, and in those cases it should have at least a foaf:name.

prov:wasRevisionOf connects new revisions of the vocabulary to the old revision they’re based on.