PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For psychotherapy, respondents were asked ???How many visits??? were made to a mental health professional (ie, psychiatrist, psychologist, counselor, social worker, and other health professionals) ???in the past 12 months???? and ???How many minutes these visits lasted on average???? Lay counselors (eg, pastors) were excluded.
http://www.w3.org/ns/prov#wasQuotedFrom
  • jamanetwork.com