About: http://webisa.webdatacommons.org/234979291

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	By the time that Chevalier John Taylor drew this diagram, it was realised that the lens was a focusing mechanism.
http://www.w3.org/ns/prov#wasQuotedFrom	gresham.ac.uk