PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This invention relates to water purification and more particularly, it relates to purification of water to remove materials such as carbon dioxide, ammonia and other weakly ionized material using reverse osmosis membranes.
http://www.w3.org/ns/prov#wasQuotedFrom
  • docstoc.com