About: http://webisa.webdatacommons.org/290601763

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	People would sell themselves into slavery to pay off debts or as a form of protection from addiction (substances, gambling, crime, etc), knowing the master would enforce good behavior as a crude form of social security.
http://www.w3.org/ns/prov#wasQuotedFrom	scienceforums.net