About: http://webisa.webdatacommons.org/31621798

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	Drum 11 is made of a transparent material, such as glass or plastic, so as to permit light from one or more sources inside the drum to illuminate the back side of sheet 15.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es