Question: What is the governmental system of the country with the national anthem Dear Land of Guyana, of Rivers and Plains?
Answer(s):
answer: Semi-presidential system
answer: Unitary state
answer: Republic

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.country.national_anthem ?k .
?k ns:government.national_anthem_of_a_country.anthem ns:m.01pm62 . 
?c ns:location.country.form_of_government ?x .
}