PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Desertification affects nearly all of the arid regions, to varying degrees, except for the extremely arid climatic deserts such as the Sahara, Atacama, and Taklimakan.
http://www.w3.org/ns/prov#wasQuotedFrom
  • columbia.edu