Question: What is Nina Dobrev's nationality which has a population number of 17909009?
Answer(s):
answer: Canada

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:topic_server.population_number "17909009" . 
}