PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Groundwater, soil, and surface water are contaminated with VOCs, various explosives, perchlorates, and heavy metals including lead, arsenic, and chromium.[16]
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org