PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Other frequently underappreciated causes of insomnia include primary sleep disorders such as sleep apnea, restless legs syndrome or abnormal movement disorders during sleep.
http://www.w3.org/ns/prov#wasQuotedFrom
  • everydayhealth.com