PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There are many reasons why sleeping problems occur such as stress, bad habits, working nights, drinking too much coffee, not getting enough exercise, and so on.
http://www.w3.org/ns/prov#wasQuotedFrom
  • prlog.org