PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Their adverse effects include the contamination of water, soil, and air with heavy metals and other chemical elements like selenium, nickel, lead, cyanide, or arsenic.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ashoka.org