About: http://webisa.webdatacommons.org/61803628

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 filter media to be cleaned is moved in a countercurrent direction with a washing liquid, such as the liquid that has been filtered by passing the liquid upwards through the filter medium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com