About: http://webisa.webdatacommons.org/232019162

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	Some anions such as sulphate, silicate, phosphate, carbonate, etc., also play an important role in preventing the conversion.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com