PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Environmental activists and ???Greenpeace Russia??? indicated worries that there is a dangerous increase of concentration of high-risk of toxic elements such as arsenic, phenol and a number of oil derivatives.
http://www.w3.org/ns/prov#wasQuotedFrom
  • time.com