About: http://webisa.webdatacommons.org/392711489

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	A lens with one surface having a convex radius of curvature of 13.81 mm and made from a plastic such as CR-307??? or PMMA is used as the substrate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com