About: http://webisa.webdatacommons.org/320268569

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	Typically, the rotatable disks 28 and 30 are made with plate steel, aluminum, or other suitable metal or material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es