PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • > Global air travel is expected to double by 2020, resulting in more congestion on the ground and in the air, especially in Europe
http://www.w3.org/ns/prov#wasQuotedFrom
  • esa.int