About: http://webisa.webdatacommons.org/15814281

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	This arrangement, whilst simple to design and construct, has some limitations not least the rotation of the greater part of the lens assembly including the front element.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org