<http://webisa.webdatacommons.org/28473929>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/28473929>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<bc.edu> .
<http://webisa.webdatacommons.org/prov/441920913>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/28473929> .
<http://webisa.webdatacommons.org/prov/30287311>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/28473929> .
<http://webisa.webdatacommons.org/28473929>	<http://www.w3.org/ns/prov#value>	"Trade barriers other than tariffs, quotas and transport costs are apparently very large even between developed countries such as the US and Canada." .