About: http://webisa.webdatacommons.org/120195814

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	(2) Steel and iron end products: Items made primarily of steel or iron such as structures, bridges, and track work, including running rail, contact rail, and turnouts.
http://www.w3.org/ns/prov#wasQuotedFrom	federalregister.gov