About: http://webisa.webdatacommons.org/86330204

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 centrifuges discharge at intervals of about two hours, expelling a very objectionable sludge consisting of asphaltic substances, particulates such as sand, rust, scale, clay, and other solids, and No. 6 fuel oil and water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com