About: http://webisa.webdatacommons.org/329317781

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	But, due to the combination of the irregular shape of tanks and the inefficiency of conventional mixing systems, sediment build-up is a time consuming and expensive problem.
http://www.w3.org/ns/prov#wasQuotedFrom	wateronline.com