About: http://webisa.webdatacommons.org/176730617

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Conditioning agents such as oxidizing agents or reducing agents can be added to effect the oxidation state of the metal(s) during extraction.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com