About: http://webisa.webdatacommons.org/204500720

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	When slaves were sold, the contract was a legal document, even to the extent that a buyer could sue the seller if a slave was sold under false pretenses.
http://www.w3.org/ns/prov#wasQuotedFrom	measuringworth.com