Question: Who was the narrator of the show who's music is composed by John Douglas?
SPARQL:
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>}