PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, polysomnography is expensive and because the numerous monitoring electrodes can actually disrupt sleep, its use as a diagnostic tool for insomnia should be limited to cases in which other sleep disorders, such as sleep apnea, are suspected.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nih.gov