Google&#x27;s knowledge graph was in part based on Freebase, a large open knowledge base written by Metaweb. Google acquired Metaweb, continued to grow it&#x27;s triple extractors [1] and eventually shut write access to the graph. Wikidata is slowly extracting information from the last public version of Freebase to grow out their own knowledge base.<p>[1] <a href="http:&#x2F;&#x2F;www.cs.ubc.ca&#x2F;~murphyk&#x2F;Papers&#x2F;kv-kdd14.pdf" rel="nofollow">http:&#x2F;&#x2F;www.cs.ubc.ca&#x2F;~murphyk&#x2F;Papers&#x2F;kv-kdd14.pdf</a>