About: http://webisa.webdatacommons.org/132201315

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 only test I can think of is to fix a point when it is approx. half way between its two nearest neghbours, which is the voronoi definition.
http://www.w3.org/ns/prov#wasQuotedFrom	openprocessing.org