About: http://webisa.webdatacommons.org/150420769

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	Each of the coils may be strands of wire made from a conductive material, such as aluminum or copper, wrapped around a groove formed in the casing 355 or liner 255.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com