<http://webisa.webdatacommons.org/prov/173279413> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/89987729> . <http://webisa.webdatacommons.org/89987729> <http://www.w3.org/ns/prov#value> "Known as the Golden age of air racing, the 1930s was a time when racing plane designers were developing aircraft that in many cases were faster and more reliable than the best military planes." . <http://webisa.webdatacommons.org/89987729> <http://www.w3.org/ns/prov#wasQuotedFrom> <aerofiles.com> . <http://webisa.webdatacommons.org/89987729> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> .