Question: What is the company whose one of the key person is Dennis Muilenburg and produces Boeing CH-47 Chinook ?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/keyPeople> <http://dbpedia.org/resource/Dennis_Muilenburg> . ?uri <http://dbpedia.org/ontology/product> <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>}