Question: What country was lead by the person who said "The buck stops here"?
Answer(s):
answer: United States of America

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:people.person.quotations ns:m.048cd7g . 
?c ns:government.politician.government_positions_held ?y .
?y ns:government.government_position_held.jurisdiction_of_office ?x .
}