Question: Name the company which produces both  Boeing F/A-18 E/F Hornet nad CH-46 Chinook ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE {?uri onto:product <http://dbpedia.org/resource/Boeing_F/A-18E/F_Super_Hornet> . ?uri prop:products <http://dbpedia.org/resource/Boeing_CH-47_Chinook>  . ?uri rdf:type onto:Company}