About: http://webisa.webdatacommons.org/21041274

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 structural portion 30 may be made from any structural material, such as plastic, ceramic, copper, brass, bronze, stainless steel or another metal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com