Question: What language in Switzerland that belonged to Gallo-Romance languages language family?
Answer(s):
answer: French

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.06mzp)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.06mzp ns:location.country.languages_spoken ?x .
?x ns:language.human_language.language_family ns:m.01s460 . 
}