About: http://webisa.webdatacommons.org/259001173

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	Beginning as early as 4000 BC, people were trading livestock, tools, and other items.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org