PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The disease is particularly hard to treat because it is unusually aggressive, symptoms are often vague and appear at a late stage and surgery is very difficult.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bbc.co.uk