Wikidata is a really cool project, despite its somewhat unwelcoming complexity at first glance. As this article notes, linking is the real magic, and (again as

Wikidata is a really cool project, despite its somewhat unwelcoming complexity at first glance. As this article notes, linking is the real magic, and (again as noted in the getting started page they link to) using their mix’n'match service to crosslink existing databases is the biggest bang for buck.