About: http://webisa.webdatacommons.org/190867844

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	3) Toxic elements - Heavy metals such as lead, cadmium, nickel, and mercury and fluorine and other toxic elements am released mainly by large metal smelters and by transportation vehicles using leaded gasoline.
http://www.w3.org/ns/prov#wasQuotedFrom	berkeley.edu