About: http://webisa.webdatacommons.org/290866841

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	prevented from flowing with the produced fluids, they can, and often do, plug tubing, valves or other equipment and cause excessive and rapid abrasion of such equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com