About: http://webisa.webdatacommons.org/167943392

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	Suitable materials for fabricating retainer 22 include polypropylene, poly-methylmethacrylate (also known as PMMA), Proline (trademark), or metal, such as stainless steel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com