PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Almost 10 percent of the world's land mass is currently covered with glaciers, mostly in places like Greenland and Antarctica.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgs.gov