About: http://webisa.webdatacommons.org/409743061

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	Where X??? is a polyvalent anion such as carbonate or sulfate it is understood that the positive and negative charges in structures VI and VII are properly balanced.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com