About: http://webisa.webdatacommons.org/419936468

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	Certain reducing agents such as ascorbic acid and sodium sulfite as controller provided almost colorless (faint blue coating) coating which turned blue when treated with steam.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com