About: http://webisa.webdatacommons.org/161907549

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	Accordingly, the membranes may take on any suitable shape, including rectangular, triangular, round, hemispherical, etc., depending on the shape of the liquid-retaining structure being covered.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com