About: http://webisa.webdatacommons.org/69002705

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	Copernicus grasped the fact that the earth was a planet, but by placing the sun in the center of a closed system, he made the sun unique.
http://www.w3.org/ns/prov#wasQuotedFrom	theosophy-nw.org