Who was the narrator of the show who's music is composed by John Douglas?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/composer> <http://dbpedia.org/resource/John_Douglas_(conductor)> . ?x <http://dbpedia.org/property/narrated> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/TelevisionShow>}
John_Douglas_(conductor)