PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Accordingly, previous attempts to recover lithium or other active metals have relied upon high temperatures using anhydrous molten salt, which is a difficult and expensive process.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.co.uk