PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Since these people cannot see light, they may have sleep problems such as sleeping during the day and being awake at night.Natural melatonin levels slowly drop with age.
http://www.w3.org/ns/prov#wasQuotedFrom
  • insomniahelp.info