About: http://webisa.webdatacommons.org/389592238

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	Parts of the terrain closest to the viewpoint are rendered at high detail by selecting high level nodes (ones at the bottom of hierarchy), while far away ones are rendered at very low detail (by selecting parent nodes).
http://www.w3.org/ns/prov#wasQuotedFrom	gamedev.net