About: http://webisa.webdatacommons.org/84672589

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	A natural boundary is one existing in nature, such as a river; while an artificial boundary is one created by written conveyance such as the Public Land Survey System, Subdivisions or Deeds.
http://www.w3.org/ns/prov#wasQuotedFrom	denvergov.org