PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, there is an urgent need to make the process of desalination more effective and less costly than current methods.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nanotech-now.com