PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Many water pipes are broken with leakages, and pathogens and other pollutants can also get in, which deteriorates water quality and causes waterborne diseases. (See the picture attached.)
http://www.w3.org/ns/prov#wasQuotedFrom
  • pgwi.org