Question: Which executive producer of Into the Dalek also produced Wizards vs Aliens ?
SPARQL:
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Into_the_Dalek> <http://dbpedia.org/property/executiveProducer> ?uri. <http://dbpedia.org/resource/Wizards_vs_Aliens> <http://dbpedia.org/ontology/producer> ?uri}