PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • High concentrations of people, buildings and cars can cause pollution and problems with maintaining greenery amongst the surplus of building materials such as concrete, glass and steel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • warmboard.com