About: http://webisa.webdatacommons.org/155565705

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 middle plate 19, top plate 21 and shield 31 comprising the guiding means can be made of any suitable rigid plastic material or metal such as steel or aluminum.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com