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<http://webisa.webdatacommons.org/prov/471497925>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/355419507> .
<http://webisa.webdatacommons.org/355419507>	<http://www.w3.org/ns/prov#value>	"n such as results from weathering of copper-containing particles on an exterior surface." .
<http://webisa.webdatacommons.org/355419507>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .