PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If a headache, such as a migraine, begins slowly, many people can use biofeedback to stop the attack before it becomes full- blown.
http://www.w3.org/ns/prov#wasQuotedFrom
  • clevelandclinic.org