Being
able to declare certain "properties of properties" is an essential
building block for querying and inference. However, the way to declare
that a property is, say, transitive in OWL does not have a clear analog
in Wikidata syntax. We could certainly shoehorn such a statement into
our existing model (and it looks like we'll need to), but it is
important to do so in a way that complicate things as little as possible for
downstream users, e.g. outside researchers or developers using the RDF
exports and assuming standard OWL semantics.
Please make any comments on this on-wiki at the location linked above. That way we can keep the discussion centralized.
Other discussions on that page could also benefit from input by people knowledgeable about Semantic Web vocabulary.
1. Discussion permalink:
https://www.wikidata.org/w/index.php?title=Wikidata:Property_proposal/Property_metadata&oldid=182088235#How_should_we_declare_that_a_property_is_transitive