About: http://webisa.webdatacommons.org/413495432

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	l, 17-7 PH, other spring metal alloys such as Elgiloy???, Inconel???, superelastic polymers, combination or other suitable materials may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk