About: http://webisa.webdatacommons.org/94236791

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	The opening, or aperture, can be opened and closed (in a roughly circular configuration - though it may actually be a pentagon or an octagon or other shapes, depending on the construction of the specific lens in question).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com