PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Since the first report on device closure of patent ductus arteriosus (PDA) by Porstmann et al in 1967, the procedure has gained wide acceptance and has been used all over the world, including parts of Africa.
http://www.w3.org/ns/prov#wasQuotedFrom
  • researchgate.net