About: http://webisa.webdatacommons.org/199437164

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	Non-carbonaceous reducing agents including hydroxyl amine, hydrazine, thionyl chloride and gaseous hydrogen also may be used for this purpose.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca