About: http://webisa.webdatacommons.org/439972376

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 light-transmitting element may include a layer of a material, such as glass, that transmits light at the wavelengths of the optical signals that need to pass to or from the optical communications device.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com