About: http://webisa.webdatacommons.org/449824450

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	Okay, with those restrictions and the fact that the grid is flat there is a solution.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com