Question: What do they speak in Cambodia that belongs to the Indo-European languages?
Answer(s):
answer: French

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01xbgx)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01xbgx ns:location.country.languages_spoken ?x .
?x ns:language.human_language.language_family ns:m.03v09 . 
}