About: http://webisa.webdatacommons.org/272609252

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	This would save the step of calculating 'straightness' that I mentioned to remove the graticule, and also get rid of the numbers and other random noise.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com