About: http://webisa.webdatacommons.org/278519158

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	Although the porous material is preferably a polymer material, other materials such as ceramics and metals can also be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com