PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In order to be considered major depression, symptoms such as suicidal thoughts, lack of appetite and loss of interest in social activities must continue for a period of at least two weeks (Arbetter, 1993).
http://www.w3.org/ns/prov#wasQuotedFrom
  • brains.org