PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Migraine is the most common disabling headache, affecting 11% of the population in Western Europe and the United States.1 It is marked by pulsating, moderate to severe pain lasting from 4-72 hours, and may be associated with nausea and sensitivity to light or sound.
http://www.w3.org/ns/prov#wasQuotedFrom
  • biospace.com