Wikidata Meets the Google Knowledge Graph

" ... While Google has never explicitly revealed the source from which it pulls the data for the Knowledge Graph, it is widely understood that Freebase is a highly regarded source of information for Google and its Knowledge Graph.  Freebase is a massive database of information curated and organized online. It includes people, places, things, and concepts. Freebase helps search engines understand the nature of a given entity, and any associations it may have with another entity. As companies have begun to learn about the critical role that Freebase plays in shaping the Knowledge Graph, many are dedicating time and resources towards entering as much relevant data as possible into Freebase.  owever, back in December 2014, Freebase released a dramatic announcement on Google+, which, among other things, stated: 'When we publicly launched Freebase back in 2007, we thought of it as a 'Wikipedia for structured data.' So it shouldn’t be surprising that we’ve been closely watching the Wikimedia Foundation’s project Wikidata since it launched about two years ago. We believe strongly in a robust community-driven effort to collect and curate structured knowledge about the world, but we now think we can serve that goal best by supporting Wikidata – they’re growing fast, have an active community, and are better suited to lead an open knowledge base.  So we’ve decided to help transfer the data in Freebase to Wikidata, and in mid-2015 we’ll wind down the Freebase service as a standalone project. Freebase has also supported developer access to the data, so before we retire it, we’ll launch a new API for entity search powered by Google’s Knowledge Graph'  In a word, as of March 31, Freebase began to shut down, and will soon be migrating its data to Wikidata, an open-source project of the Wikimedia Foundation designed to collect structured data ..."