Question: Vasco was appointed to his/her government position by John III of Portugal, what country di Vasco come from?
Answer(s):
answer: Portuguese Empire

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:government.politician.government_positions_held ?k .
?k ns:government.government_position_held.appointed_by ns:m.012s__ . 
?c ns:people.person.nationality ?x .
}