Question: What two European Union countries  speak German and once used the Swiss franc as domestic currency?
Answer(s):
answer: Liechtenstein
answer: Switzerland

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.04306rv)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.04306rv ns:language.human_language.countries_spoken_in ?x .
?x ns:location.country.currency_used ns:m.01_h4b . 
}