PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Boron and strontium and other materials could also be affordably recovered from the ocean (an initially from brines).
http://www.w3.org/ns/prov#wasQuotedFrom
  • nextbigfuture.com