PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Testing the water quality at certain intervals is essential to ensure that it is free of hazardous micro-organisms, chemicals and other potentially health threatening agents.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ecu.edu.au