About: http://webisa.webdatacommons.org/101271046

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 plates 2 and 4 are made from a transparent or translucent material such as glass or plastic and at least the top surface of plate 2 and the bottom surface of plate 4 are substantially flat.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es