About: http://webisa.webdatacommons.org/209179767

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 conventional technique for fabricating optical components such as lenses or mirrors comprises successive operations of providing a blank, grinding it down, and then polishing it.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com