Question: What is the national language of the country where the government called Government of Iran is located?
Answer(s):
answer: Persian 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:government.governmental_jurisdiction.government ns:m.0k9mc . 
?c ns:location.country.official_language ?x .
}