About: http://webisa.webdatacommons.org/410035580

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 top and bottom casings 20 and 30, respectively, are formed of a rigid material such as molded plastic or manufactured metal like cast aluminum or machined steel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com