About: http://webisa.webdatacommons.org/110189911

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 Khan Academy, a not-for-profit organization providing free world-class education online for anyone anywhere, offers math and science content including physics, cosmology and astronomy.
http://www.w3.org/ns/prov#wasQuotedFrom	usra.edu