About: http://webisa.webdatacommons.org/298793814

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, such as projection lenses, condensers, and the like, are not shown in FIGS. 1 and 2 for simplicity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es