About: http://webisa.webdatacommons.org/274691619

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	Structural materials, including aluminum must come from a qualified source, and certified to meet requirements (chem composition, hardness -heat treatment-, etc).
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net