Question: What is the official language of the EU where the main country speaking it is Germany?
Answer(s):
answer: German Language

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0_6t_z8)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0_6t_z8 ns:user.ktrueman.default_domain.international_organization.official_language_s ?x .
?x ns:language.human_language.main_country ns:m.0345h . 
}