Question: What country with a government that included the position Tsar comprises the nationality of Nina Dobrev?
Answer(s):
answer: Bulgaria

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.027nwk2)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.027nwk2 ns:people.person.nationality ?x .
?x ns:government.governmental_jurisdiction.governing_officials ?c .
?c ns:government.government_position_held.basic_title ns:m.0btx7 . 
}