PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • While the area of climates suitable for closed tropical moist forest is 1600 million hectares (Sommer, 1976), part of this is thought to have historically been covered by other vegetation types due to soil type and other ecological and historical factors.
http://www.w3.org/ns/prov#wasQuotedFrom
  • columbia.edu