Question: Which TV show's company is PlayTone and is produced by Stephen E. Ambrose ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE {?uri prop:company <http://dbpedia.org/resource/Playtone> . ?uri prop:producer <http://dbpedia.org/resource/Stephen_E._Ambrose>  . ?uri rdf:type onto:TelevisionShow}