About: http://webisa.webdatacommons.org/42364046

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	sense, because the economic advantage was small or none, the U. S. could afford to delay it 10 - 20 years, and there was a proliferation
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org