PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • disharmony in family life, being a single, unsatisfied over the school performance of kids, a habit of going to bed only during late night for studies/work, serious health issue of spouse/kids, psychiatric disease i.e. depression may be stronly associated with insomnia.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org