Question: What country  is in the Andean Region with a calling code of 54?
Answer(s):
answer: Argentina

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0p2n)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0p2n ns:location.location.partially_containedby ?x .
?x ns:common.topic.notable_types ns:m.01mp .
?x ns:location.country.calling_code "54" . 
}