Question: Where is the major exporter of Hydropower located?
Answer(s):
answer: Africa

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.statistical_region.major_exports ?k .
?k ns:location.imports_exports_by_industry.industry ns:m.03nfl . 
?c ns:base.locations.countries.continent ?x .
}