Greetings,
Structured Commons will need properties to make statements about files. The development team is working on making the software ready to support properties; the question is, what properties does Commons need?
You can find more information and examples to help find properties in a workshop on Commons. Please participate and help fill in the list, and let me know if you have any questions. Thanks! -- Keegan (WMF) (talk) 18:53, 28 June 2018 (UTC)