Question: What governmental system has been used by both the Soviet Union and Dominica?
Answer(s):
answer: Parliamentary republic

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.05vz3zq)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.05vz3zq ns:location.country.form_of_government ?x .
?x ns:government.government.government_for ns:m.027nb . 
}