Question: What is the currency of the country with the Coat of Arms of Mexico as its coat of arms?
Answer(s):
answer: Mexican peso

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:symbols.coat_of_arms_bearer.coat_of_arms_used ?k .
?k ns:symbols.armorial_grant.coat_of_arms ns:m.02wkvz . 
?c ns:location.country.currency_used ?x .
}