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<http://webisa.webdatacommons.org/192183593>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<reference.com> .
<http://webisa.webdatacommons.org/192183593>	<http://www.w3.org/ns/prov#value>	"Low-grade iron ore, copper, zinc, tin, tungsten, and other minerals are mined." .
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