About: http://webisa.webdatacommons.org/67244409

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	The map is undated, but there is a clue about when it might have been made.
http://www.w3.org/ns/prov#wasQuotedFrom	mainememory.net