Thad Guidry, 12/09/2016 15:46:
Not sure I understand what you mean by 'item' ? Do you mean a Wikidata topic ?
I don't know what a "Wikidata topic" is, no such term is found on https://www.wikidata.org/wiki/Wikidata:Glossary .
Your example Q474191 already has an "equivalent class" link to SchemaOrg, can you make an example of an item (Q-number) and an external thingy which you are unable to link? Thanks.
Nemo