About: http://webisa.webdatacommons.org/332972185

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	Recommended U.S. Primary Sources links to letters, speeches, documents, and other content, much of which is specified in K-12 standards
http://www.w3.org/ns/prov#wasQuotedFrom	usg.edu