PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In the past few years, Google has made significant improvements in the relevance of their organic search results (content) by introducing universal search -- the integration of new types of content, such as video and product listings, directly into search results.
http://www.w3.org/ns/prov#wasQuotedFrom
  • searchenginewatch.com