Question: From what country using the Akce currency is Mother Teresa's nationality?
Answer(s):
answer: Ottoman Empire

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01yv6p)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01yv6p ns:people.person.nationality ?x .
?x ns:location.country.currency_used ns:m.02ph12 . 
}