About: http://webisa.webdatacommons.org/292439725

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	In still other embodiments, additional optical components may be added, such as Brewster windows, direction reorienting mirrors, prisms or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk