About: http://webisa.webdatacommons.org/232938304

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	he is because the filtering agent in question, diatomaceous earth, is a mined natural product that contains iron and other metals.
http://www.w3.org/ns/prov#wasQuotedFrom	peoriapublicradio.org