PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Solutions to the task typically involve aspects of artificial intelligence and statistics, such as data mining and text mining.[1] Because artifacts are typically a loosely structured sequence of words and other symbols (rather than concepts), the problem is nontrivial, but it can provide powerful insights into the meaning, provenance and similarity of documents.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org