PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • (b) ???personal relationship??? means the relationship, other than in relation to a commercial activity, between an individual who sends the message and the individual to whom the message is sent, if they have had an in-person meeting and, within the previous two years, a two-way communication.
http://www.w3.org/ns/prov#wasQuotedFrom
  • barrysookman.com