PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Depression is extremely common, with symptoms such as loss of appetite, insomnia, crying, low self-esteem and anxiety.
http://www.w3.org/ns/prov#wasQuotedFrom
  • democraticunderground.com