About: http://webisa.webdatacommons.org/146594569

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	Doumanidis says that with moving structures, such as cars or airplanes, engineers have tried to emphasize strength-to-weight ratio using steel and then aluminum and titanium alloys, all of which are full and continuous materials.
http://www.w3.org/ns/prov#wasQuotedFrom	tufts.edu