About: http://webisa.webdatacommons.org/313405178

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 dimensions of the semi-major and semi-minor axes of the ellipse are chosen to give a good fit of the ellipsoid to the geoid over a large area, such as North America or Europe.
http://www.w3.org/ns/prov#wasQuotedFrom	army.mil