Lydia, there is more to (2) than just talking about the data stored in those files on Commons. Scans like the one you mention should link back to the Wikidata item. So there is a need to be able to add such Wikidata links from every file that refers to the image. So for example in this case below of a painting on Wikipedia, I use several images to illustrate the article, but this is a painting that has been restored and the before and after images are on Commons, but not in a dedicated category together :

https://en.wikipedia.org/wiki/St._Mark,_by_Frans_Hals

I want to link both of these files to the Wikidata item, which is possible if I edit the artwork templates of both files by hand, but it would be nice to be able to update these with a mouseclick.

On Fri, Nov 20, 2015 at 3:05 PM, Lydia Pintscher <lydia.pintscher@wikimedia.de> wrote:

Hey folks :)

Just one really important distinction that you all need to keep in
mind and that isn't entirely obvious always: We have different kinds
of structured data related to Commons.
1) data about an actual painting of say Mona Lisa for example. This is
and will be on Wikidata. It can be used on Commons the same way
Wikipedia uses data from Wikidata. One example would be where the
painting is located and who painted it.
2) data about a particular files like the scan of the above painting.
This is and will be stored on Commons itself. One example would be who
took the photo, what it depicts or under which license the file is
released.

For 1) we still need to finish some last pieces to make sure everyone
gets data shown in their language. I hope we can solve that early next
year depending on how hairy the problem still turns out to be. We've
made progress on it already.
For 2) we need to allow Commons itself to store structured data. We
are doing groundwork for this and hope to make significant progress
and a prototype for people to play with and give feedback early next
year.

Hope that clarifies things a bit.

Cheers
Lydia

--
Lydia Pintscher - http://about.me/lydia.pintscher
Product Manager for Wikidata

Wikimedia Deutschland e.V.
Tempelhofer Ufer 23-24
10963 Berlin
www.wikimedia.de

Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.

Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg
unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das
Finanzamt für Körperschaften I Berlin, Steuernummer 27/681/51985.

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