About: http://webisa.webdatacommons.org/366665586

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 comparison, a spherical SIL is a solid lens with a curved surface with a constant radius and a flat surface.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com