PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Shell is a key player in the huge energy challenge currently facing the world, estimating that by the middle of this century the world will need twice as much energy for half the CO2.
http://www.w3.org/ns/prov#wasQuotedFrom
  • iop.org