About: http://webisa.webdatacommons.org/435313393

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	depending on r for a certain progressive refractive surface; and n is an integer of 2 or more.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com