About: http://webisa.webdatacommons.org/235679876

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	In this case the membrane material is made up of at least two layers which may be mutually of the same material or of different materials selected from the group including the materials listed in the preceding paragraph.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com