About: http://webisa.webdatacommons.org/436998026

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 inner rail 62 and outer rail 60 are preferably roll-formed steel, but may be extruded from aluminum, aluminum alloys or other suitable materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com