About: http://webisa.webdatacommons.org/17598390

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	Moreover, there is a problem that it is not possible to make the light emerge from the optical element 1 reliably with a prescribed accuracy because the glass members 2 are not closely adhered to the element body 1.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com