About: http://webisa.webdatacommons.org/289083414

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	Cleaning pigs sweep the pipe of built up wax, water or other solids that precipitate out of the oil stream.
http://www.w3.org/ns/prov#wasQuotedFrom	freerepublic.com