About: http://webisa.webdatacommons.org/455402784

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	Such low refractive index member may be made of a material such as a silica, a transparent resin (for example, a melamine resin or a methacrylic resin) or the like which keeps a uniform porous structure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com