PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It generally occurs in people who are experiencing one or more of the following:A life crisis or stressA change in the sleep environment, including factors such as noise, light, or temperatureSleep/wake schedule problems, such as those due to jet lag or temporary shift workSide effects of medicationChronic insomnia often results from a medical condition.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wkhs.com