Question: What is the main language where the religious leader is Ovadia Yosef?
Answer(s):
answer: Hebrew 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:religion.religious_leadership_jurisdiction.leader ?k .
?k ns:religion.religious_organization_leadership.leader ns:m.02qmnw . 
?c ns:location.country.official_language ?x .
}