Hi Thad, 

   Coincidentally I am drafting an abstract on exactly this topic. So yes I am keen on getting more of these properties in place. Bare mind that getting properties proposed can be challenging.  I will draft the proposal for close match.  Do you have a show case example,  I could use to draft this proposal. An example where an actual Wikidata item, maps to the one or more  systems with more granularity. 

Regarding the external subclass, why not create an item for the external subclass in Wikidata and map that with the internal sub class property (P279) and  then use the property exact match (P2888) to map the new item to the external class.

Cheers,

Andra 

On Mon, Sep 12, 2016 at 6:38 PM, Thad Guidry <thadguidry@gmail.com> wrote:

Hi Andra,

Yes, we'll want to have skos:closeMatch available....but also...

We need to help with long-tail domain support, and one way to do that is support more 'external' properties.  Wikidata doesn't have all the data in the world yet, or a full understanding of it...but many times external systems do.  So I'd like to see the 'classes' properties of Wikidata to also have 'external' support.

Please propose additionally, a 'external subclass' Wikidata property as well.

That should do for now.


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