PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A residential water user's objective for either substituting or additionally treating utility-supplied drinking water is to achieve truly clean and pure drinking water; i.e., drinking water which is free from those heavy metals, sediments, chemicals, contaminants, pathogens, and other impurities that either cannot be or are not removed by the local water utility.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.co.uk