PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Email marketing is the key way to make sales to contacts that you have built a relationship with via your blog, Facebook, Twitter or other social media.
http://www.w3.org/ns/prov#wasQuotedFrom
  • smashwords.com