About: http://webisa.webdatacommons.org/300075451

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	All that was really known was that a few major desert rivers entered the region, especially the Green River, and the Grand, and that there was a place called the Grand Canyon and Grand Wash Cliffs where the river emerged.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com