<http://webisa.webdatacommons.org/126647212>	<http://www.w3.org/ns/prov#value>	"Coltan ore is valuable as a source of niobium and tantalum, metals key to many kinds of electronics." .
<http://webisa.webdatacommons.org/126647212>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<bradblog.com> .
<http://webisa.webdatacommons.org/126647212>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/208373258>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/126647212> .
<http://webisa.webdatacommons.org/prov/84003854>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/126647212> .