About: http://webisa.webdatacommons.org/371509301

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	FIG. 17 is a diagrammatic representation of the optical effect of an optical lens which is partially covered by the iris and which increases the normal depth of focus of an eye; and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com