About: http://webisa.webdatacommons.org/332722633

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 is a ground or moulded piece of glass, plastic or other transparent material with opposite surfaces, either or both of which are curved, meaning that light rays are refracted so that the converge or diverge to form an image.
http://www.w3.org/ns/prov#wasQuotedFrom	dphoto.co.nz