About: http://webisa.webdatacommons.org/196591284

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	In ancient times, commodities such as salt,sugar, tobacco, oxen, and slaves were so used.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net