Question: Who was the leader of the country where the Chuvash language was spoken during WWII?
Answer(s):
answer: Nikita Khrushchev
answer: Leonid Brezhnev

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.languages_spoken ns:m.038h82 . 
?c ns:government.governmental_jurisdiction.governing_officials ?y .
?y ns:government.government_position_held.office_holder ?x .
?x ns:military.military_person.participated_in_conflicts ns:m.081pw .
}