About: http://webisa.webdatacommons.org/270136416

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 one preferred embodiment, ridge portion 234 is formed from a more rigid metal, such as titanium, and extension portion 236 can be formed from a more flexible metal, such as a spring metal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com