About: http://webisa.webdatacommons.org/281842471

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	Some places, like Chicago and other major cities, use grid systems that started in Philadelphia which have a center 0/0 point in the city, e.g. State and Madison in Chicago.
http://www.w3.org/ns/prov#wasQuotedFrom	macheist.com