<https://articles.entireweb.com/seo/googles-seo-best-practices-summed-up-in-new-video/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://articles.entireweb.com/seo/googles-seo-best-practices-summed-up-in-new-video/>