PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Not so long ago, all there was to SEO was a few paragraphs of well written optimized text, which meant and still means relevant content that contains your chosen keywords, plus a little judicious optimization of the page's code, which usually meant META tags and links.Now, arguably, your links are the most important thing you have going for you--and then again maybe not.
http://www.w3.org/ns/prov#wasQuotedFrom
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