About: http://webisa.webdatacommons.org/224208055

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 prime functions are mechanical and biological filtration; all the other media, such as carbon and zeolite, are bolt-on goodies that may or may not be of any value.
http://www.w3.org/ns/prov#wasQuotedFrom	fishforums.net