About: http://webisa.webdatacommons.org/12263831

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	In stage 4, Water flows through the ion exchange resin, reducing heavy metals such as lead, copper, aluminum, and water hardness.
http://www.w3.org/ns/prov#wasQuotedFrom	filterwater.com