About: http://webisa.webdatacommons.org/44958411

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	To be worthy of the term spacecraft, a system needs to provide the same sort of economics and operability as an aircraft.
http://www.w3.org/ns/prov#wasQuotedFrom	citizensinspace.org