About: http://webisa.webdatacommons.org/212313312

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	but other material may include cobalt chrome alloys, polypropylene, or other rigid or semi-rigid polymers and composites.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com