PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Actually, life is particularly difficult to come by ??? and there are a number of properties and features that need to be just right for life to exist on planet earth.
http://www.w3.org/ns/prov#wasQuotedFrom
  • algemeiner.com