Question: What is the product of the BBC Multimedia and is the theme of Visions, the convention?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/BBC_Multimedia> onto:product ?uri. <http://dbpedia.org/resource/Visions_(convention)> prop:genre ?uri}