Below are screen shots of our Linked Open Data metadata model for controlled crowdsourcing. For live examples of authority-controlled metadata, click on any image in this exhibit and you will see the Dublin Core record for that item, where you can test the links to authority files for various data sets.
Faceted metadata template for user contributions controlled by Linked Open Data to authority files: Part 1, Context.
Faceted metadata template for user contributions controlled by Linked Open Data to authority files: Part 2, Carrier.
Faceted metadata template for user contributions controlled by Linked Open Data to authority files: Part 3, Content.
Faceted metadata template controlled by Linked Open Data to authority files: Drop-down list of Authority Files.