Nice to see this, @Grant. And, the AgentIdentifier_WebLinks.xml you’ve provided to load into the editor certainly makes this easy for users to get started. I recommend use of the “Concept URI” (aka “entity”) version of the URL for wikidata in that XML file like this: http://www.wikidata.org/entity/Q1035 (note the absence of the “s” in the http, plus the “entity” in the path). If you’re a human, that redirects to the human-readable version of the wikidata page, but its use here is more in-line with the spirit of what we’re trying to do, which is to refer to the concept as expressed elsewhere.