About: http://webisa.webdatacommons.org/157201334

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	Alternatively, though less preferred, one of the walls, such as the lower 2??? wall, can be formed as a flexible sheet, such as plastic film, including polyethylene or polypropylene film.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com