About: http://webisa.webdatacommons.org/217919919

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	It could also be made of sintered metal beads, sintered ceramics, or other suitable porous material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es