Question: In the country with Kassaman for national anthem, what languages do the people speak?
Answer(s):
answer: Guanche Language
answer: Northern Berber languages
answer: Proto-Berber language
answer: French
answer: Western Berber languages
answer: Numidian language
answer: Arabic 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.01l2r2 . 
?c ns:location.country.languages_spoken ?x .
}