PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For example, the switch to unleaded petrol and the use of catalytic converters has led to significant reductions in lead pollution in some areas (lead concentration at Mascot, inner Sydney, fell by some 60% between 1993 and 1996).13 A greater use of renewable power sources to generate energy could also reduce some forms of air pollution.
http://www.w3.org/ns/prov#wasQuotedFrom
  • abs.gov.au