PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A conversation would start when there was a task, or topic of discussion, that required the action of both members, and one conversant brought it up with the other (for instance, two people in a relationship deciding what to eat for dinner).
http://www.w3.org/ns/prov#wasQuotedFrom
  • arstechnica.com