About: http://webisa.webdatacommons.org/229022264

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	Layers 14 and 18 typically are formed of a polyester film although other polymer films such as polypropylene, polyethylene, polyurethane, Nylon???, Dacron???, Kevlar???, or polytetrafluoroethylene could be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com