About: http://webisa.webdatacommons.org/61486546

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 filtering agent used is diatomaceous earth, a mined natural product that contains iron and other metals.
http://www.w3.org/ns/prov#wasQuotedFrom	friendseat.com