About: http://webisa.webdatacommons.org/309296634

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 basic rule remains to use alkaline chemistries to remove organic contaminants, such as oils, greases, coolants and animal fats, and to use acidic chemistries to remove inorganic contaminants, like oxides.
http://www.w3.org/ns/prov#wasQuotedFrom	pfonline.com