About: http://webisa.webdatacommons.org/40678261

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 addition, any portion of the lens system 100 other than the optic(s) may be formed from stainless steel or a shape-memory alloy such as nitinol or any iron-based shape-memory alloy.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com