Question: What languages are in the Brittonic language family and spoken within the UK?
Answer(s):
answer: Cornish Language
answer: Welsh Language

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.07ssc)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.07ssc ns:location.country.languages_spoken ?x .
?x ns:language.human_language.language_family ns:m.01b1d . 
}