Question: Which  science fiction show has Steven Moffat as executive producer ?
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 onto:executiveProducer <http://dbpedia.org/resource/Steven_Moffat> . ?uri prop:genre <http://dbpedia.org/resource/Science_fiction>  . ?uri rdf:type onto:TelevisionShow}