About: http://webisa.webdatacommons.org/330965906

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	Lenses are used singly or in groups in such instruments as cameras, projectors, microscopes, telescopes, binoculars, opera glasses, and eyeglasses.
http://www.w3.org/ns/prov#wasQuotedFrom	infoplease.com