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