About: http://webisa.webdatacommons.org/304726160

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	The sewage also contained trace amount of other heavy metals such as nickel, chromium and lead and significant removal of these trace amounts occurred.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com