About: http://webisa.webdatacommons.org/80064339

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	Because they can trade food for labor, supplies and other types of food, not just farm labor but a protective labor force against thieves.
http://www.w3.org/ns/prov#wasQuotedFrom	jonathanturley.org