<http://webisa.webdatacommons.org/17470695>	<http://www.w3.org/ns/prov#value>	"A patina is a colorization effect formed on copper, bronze, brass or other metal by natural weathering or by artificial treatment with chemicals." .
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<http://webisa.webdatacommons.org/17470695>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sciencecompany.com> .
<http://webisa.webdatacommons.org/prov/115111155>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/17470695> .
<http://webisa.webdatacommons.org/17470695>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .