About: http://webisa.webdatacommons.org/22821258

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 first liner may be made of any substantially rigid material such as metal e.g. steel or aluminium or synthetic plastics material e.g. polytetrafluoroethylene.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca