About: http://webisa.webdatacommons.org/419400447

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	Further, as a material having a low refractive index, a material other than silicon dioxide may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com