About: http://webisa.webdatacommons.org/12706038

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	Operated by United States Air Force and NASA, X-15 was a rocket powered aircraft.
http://www.w3.org/ns/prov#wasQuotedFrom	toptenofcity.com