PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The first filtration kills most bacteria and virus present in the water, followed by a second filtration to remove heavy metals, such as arsenic and lead.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thechemicalblog.co.uk