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<http://webisa.webdatacommons.org/prov/459146006>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/176657352> .
<http://webisa.webdatacommons.org/176657352>	<http://www.w3.org/ns/prov#value>	"of years the Romans used gold coins as a form of currency." .