<http://webisa.webdatacommons.org/421069555>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/61228842>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/421069555> .
<http://webisa.webdatacommons.org/421069555>	<http://www.w3.org/ns/prov#value>	"Once paper or other materials are used to identify the value of an item and buy it or sell it, that material is a currency and the activity is no longer barter." .
<http://webisa.webdatacommons.org/prov/57662993>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/421069555> .
<http://webisa.webdatacommons.org/421069555>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<econedlink.org> .