PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Air pollution is a complex mixture of various gases, particulates, hydrocarbons, and transition metals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • indiaenvironmentportal.org.in