PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Filtering categories include chat, language used on a site, nudity and sexual content of a site, violence depicted on a site, and others areas such as gambling, drugs, and alcohol.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nred.org