About: http://webisa.webdatacommons.org/86083901

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	The retaining tube is preferably made of implantable grade stainless steel, but can be any other surgically safe material such as polyethylene.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk