Question: What languages are spoken in the country that has the national anthem "Du gamla, Du fria"?
Answer(s):
answer: Romani language
answer: Finnish Language
answer: Meänkieli
answer: Swedish Sign Language
answer: Turoyo Language
answer: Swedish Language
answer: Yiddish Language

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.national_anthem ?k .
?k ns:government.national_anthem_of_a_country.anthem ns:m.0m6w8 . 
?c ns:location.country.languages_spoken ?x .
}