Question: What do the Mali people speak that is also the main language spoken in Mauritania?
Answer(s):
answer: Fula language

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.04v09)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.04v09 ns:location.country.languages_spoken ?x .
?x ns:language.human_language.main_country ns:m.04vjh . 
}