PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The U.S. Food and Drug Administration (FDA) has approved two types of drugs to treat cognitive symptoms of Alzheimer's disease.
http://www.w3.org/ns/prov#wasQuotedFrom
  • alz.org