About: http://webisa.webdatacommons.org/134840937

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 indentations are filled with a liquid, optically transparent material, such as silicone, which when cured forms a hardened lens material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca