About: http://webisa.webdatacommons.org/188557415

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	How can an equivalence of services be determined except by an exchange voluntarily agreed to?
http://www.w3.org/ns/prov#wasQuotedFrom	libertyfund.org