Question: Which of the three official languages of Belgium has the initials "de"?
Answer(s):
answer: German Language

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0154j)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0154j ns:location.country.official_language ?x .
?x ns:language.human_language.iso_639_1_code "de" . 
}