About: http://webisa.webdatacommons.org/198239313

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	As for efficiency, imperial units such as feet or gallons are more easily halved/quartered etc. .
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net