PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Congratulations messages can also be conveyed on a more informal basis where close friends and family members are concerned, such as the celebration of a birthday, arrival of a newborn, personal achievement, graduation, success in getting the first job or a better job, passing of exam, getting engaged or married.
http://www.w3.org/ns/prov#wasQuotedFrom
  • letters.org