About: http://webisa.webdatacommons.org/189811595

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	Referring again to FIG. 1, the walls 18A, 18B are preferably flexible sheets or films of polymeric material such as polypropylene, polyethylene, polyester, or other polymers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk