Question: Where did the Appalachian Mountains run through that has the Canadian dollar as it's currency?
Answer(s):
answer: Québec

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0lm0n)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0lm0n ns:location.location.partially_containedby ?x .
?x ns:location.statistical_region.gdp_nominal ?c .
?c ns:measurement_unit.dated_money_value.currency ns:m.0ptk_ . 
}