Question: How many religion's commanders have served in the Royal Thai Army?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { <http://dbpedia.org/resource/Royal_Thai_Army> prop:notableCommanders ?x . ?x onto:religion ?uri . }