Question: What religion did the Turks follow in the country where the capital is Istanbul?
Answer(s):
answer: Christianity
answer: Judaism
answer: Eastern Christianity
answer: Catholicism
answer: Islam

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.capital ns:m.09949m . 
?c ns:location.statistical_region.religions ?y .
?y ns:location.religion_percentage.religion ?x .
}