About: http://webisa.webdatacommons.org/397127872

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 known usages [customs, traditions, habits, practices] of slavery in America are such as to render the statement a highly probable one.
http://www.w3.org/ns/prov#wasQuotedFrom	tripod.com