About: http://webisa.webdatacommons.org/452930864

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	The partially oxidized sludge, now with low levels of sulfur and carbon contamination, is given a gaseous hydrogen treatment to deoxidize metals such as Co, Ni, Cu and Fe.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com