About: http://webisa.webdatacommons.org/158075803

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	An optional armoring layer 19 of metallic material overlies inner tube 15, and an outer sheath of 20 formed of a plastic material such as polyethylene surrounds armoring layer 19.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com