About: http://webisa.webdatacommons.org/394784086

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	Heretofore, biomedical materials especially useful commercially as contact lenses have been based upon polymers and/or copolymers of a select set of chemistries.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com