About: http://webisa.webdatacommons.org/18747787

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	Slavery was a terrible evil, but it was invented in Africa and brought to the USA by the people of the North.
http://www.w3.org/ns/prov#wasQuotedFrom	pjmedia.com