PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A purchase order is a document that is issued from a BUYER to a SELLER. A buyer who is interested in making a purchase of products or services sends the document to the seller.
http://www.w3.org/ns/prov#wasQuotedFrom
  • families.com