Question: What flag represents the country containing the Brong-Ahafo Region?
Answer(s):
answer: Flag of Ghana

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:location.country.administrative_divisions ns:m.054mgp . 
?c ns:symbols.flag_referent.flag ?y .
?y ns:symbols.flag_use.flag ?x .
}