Question: What are the primary imports and exports of the nation in which the Afghan afghani is used as money?
Answer(s):
answer: Fruit and Tree Nut Farming
answer: Carpet and Rug Mills
answer: Opium

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:location.country.currency_used ns:m.019vxc . 
?c ns:location.statistical_region.major_exports ?y .
?y ns:location.imports_exports_by_industry.industry ?x .
}