About: http://webisa.webdatacommons.org/319541836

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	Activated carbon filters are manufactured from a variety of materials such as coal and coconut shells.
http://www.w3.org/ns/prov#wasQuotedFrom	harvesth2o.com