About: http://webisa.webdatacommons.org/177052952

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	In the case of Kanome et al, a number or other insignia may be embedded within the tinted portion of the lens to render the lens easy to find if dropped and as an indication of the front and back of the lens.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk