Question: Which country that exports to Belgium is the birthplace of James Watt?
Answer(s):
answer: Scotland

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.043rm)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.043rm ns:people.person.nationality ?x .
?x ns:location.statistical_region.places_exported_to ?c .
?c ns:location.imports_and_exports.exported_to ns:m.0154j . 
}