Question: Which religion is followed by the PM who was served by Chea Sim?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { res:Chea_Sim prop:primeminister ?x . ?x onto:religion ?uri  . }