About: http://webisa.webdatacommons.org/13189008

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	As used herein, ???polyion coagulant??? refers to a coagulant that is a salt or an oxide, such as a metal salt or a metal oxide, formed from a metal species having a valence of at least 3, at least 4, or at least 5.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com