About: http://webisa.webdatacommons.org/135620977

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	They could also have mirror shapes on them so light coming from the front, for example from a projector could be reflected to create 3D image
http://www.w3.org/ns/prov#wasQuotedFrom	google.com