Question: Which companies have launched from the Vandenberg Air Force Air base?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/launchSite> <http://dbpedia.org/resource/Vandenberg_Air_Force_Base> . ?x <http://dbpedia.org/ontology/manufacturer> ?uri  . }
Answer: The manufacturer of rocket companies who launch base is Vandenberg Air Force Base are [answer].