PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These disorders can lead to problems falling asleep and staying asleep, difficulties staying awake or staying with a regular sleep / wake cycle, sleepwalking, nightmares, and other problems that interfere with sleep.
http://www.w3.org/ns/prov#wasQuotedFrom
  • swmedcenter.com