About: http://webisa.webdatacommons.org/210614291

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	For example, Al can be replaced by Mg, Fe2+, Fe3+, Zn, Pb (e.g., from harmful substances in waste waters), Cr, Cu and other elements.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au