About: http://webisa.webdatacommons.org/247166294

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	y washing with chromic acid and then with concentrated or sometimes 10% nitric acid or by washing with an alkali, such as 28% to 30% sodium hydroxide so
http://www.w3.org/ns/prov#wasQuotedFrom	google.com