Question: Which companies have launched a rocket from Cape Canaveral Air Force station?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/launchSite> <http://dbpedia.org/resource/Cape_Canaveral_Air_Force_Station> . ?x <http://dbpedia.org/ontology/manufacturer> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Rocket>}
Answer: The producers of the rockets which launch from Cape Canaveral Air Force Station are [answer].