About: http://webisa.webdatacommons.org/213284722

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	Air or other mixing means may be introduced at the bottom of tank 4 for purposes of thoroughly mixing the flocs in the water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com