Question: Who is the producer of the device which is the operating system of Now TV  ?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Now_TV_(UK)> onto:operatingSystem ?x . ?x onto:manufacturer ?uri . }