About: http://webisa.webdatacommons.org/304820156

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 riser 30 is preferably made from a conductive material such as aluminum or copper using a known technique such as machining, extrusion, or molding.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr