Name the TV show whose company is Playtone and written by Graham Yost?
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/company> <http://dbpedia.org/resource/Playtone> . ?uri <http://dbpedia.org/property/writer> <http://dbpedia.org/resource/Graham_Yost>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/TelevisionShow>}
Playtone Graham_Yost