About: http://webisa.webdatacommons.org/274641586

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	Strong acids are used to remove valuable metals such as gold, lead, copper etc.
http://www.w3.org/ns/prov#wasQuotedFrom	authorstream.com