PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A lot of these medicines ??? there are about 10 or 11 of them in this large family some of whom have official approval for migraine suppression and most of whom do not???have been researched and published on, at least in small trials and even in double-blind trials, for suppressing migraines and other headaches.
http://www.w3.org/ns/prov#wasQuotedFrom
  • everydayhealth.com