Question: Whose mayors are affiliated with Christen-Democratisch en Vlaams?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/affiliation> <http://dbpedia.org/resource/Christen-Democratisch_en_Vlaams> . ?uri <http://dbpedia.org/ontology/leaderName> ?x  . }
Answer: The settlement whose leaderName affiliation is Christen-Democratisch en Vlaams are [Brussels, French Community of Belgium, Wallonia].