About: http://webisa.webdatacommons.org/134716796

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 disc 505 and tube 506 would typically be made of aluminum, although it is possible that other metals such as steel or copper may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com