Question: Of the countries, that Queen Elizabeth II ruled, which country has an iso 3166-1 alpha-3 of AG?
Answer(s):
answer: Antigua and Barbuda

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0d1_f)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0d1_f ns:government.politician.government_positions_held ?y .
?y ns:government.government_position_held.jurisdiction_of_office ?x .
?x ns:location.country.iso3166_1_alpha2 "AG" . 
}