That 3,146,939,673 number is the number of <i>statements</i> (triples), not the number of resources (which is the Wikidata number). Wikidata has 900M statements, not 15M[1].<p>Again, the Google Knowledge Base is <i>much</i> more than an expanded Freebase. It uses Google&#x27;s Knowledge Vault project to extract from sources outside Freebase, as well as to evaluate and update the Freebase resources. To quote:<p><i>In particular, KV has 1.6B triples, of which
324M have a confident of 0.7 or higher, and 271M have a
confidence of 0.9 or higher. This is about 38 times more than
the  largest  previous  comparable  system  (DeepDive  [32]),
which has 7M confident facts (Ce Zhang, personal communication).  To create a knowledge base of such size, we extract
facts from a large variety of sources of Web data, including
free text,  HTML DOM trees,  HTML Web tables,  and human annotations of Web pages.  (Note that about 1&#x2F;3 of the 271M confident triples were not previously in Freebase,  so we are extracting new knowledge not contained in the prior.)</i>[2]<p>[1] <a href="https:&#x2F;&#x2F;query.wikidata.org&#x2F;#SELECT%20%28COUNT%28*%29%20AS%20%3Fno%29%20{%20%3Fs%20%3Fp%20%3Fo%20%20}" rel="nofollow">https:&#x2F;&#x2F;query.wikidata.org&#x2F;#SELECT%20%28COUNT%28*%29%20AS%20...</a><p>[2] <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>