When negotiating the import of data from resources that are not CC0, it would be very valuable to have a somewhat formal process to allow them to declare that some portions of their databases may be imported into wikidata and thus join its CC0 collection.  

Does wikidata have anything like this in place?  I think slight modifications to the protocol for Commons [1] ought to be sufficient.  (Though I would like to avoid the backlog there that apparently is at 88 days now..).  

As a specific example, we have informal (e.g. an email to us) permission to import data from the Disease Ontology [2] and UniProt [3] but would like to make those informal agreements 'official' and public.  I suspect this will be a very common situation going forward. 

thoughts?
-Ben

[1] https://commons.wikimedia.org/wiki/Commons:Email_templates 
[2] http://www.obofoundry.org/ontology/doid.html  
[3] http://www.uniprot.org