Question: Which one of the seven Central American nations has a governmental office holder named Ana Helena Chacon Echeverria in it?
Answer(s):
answer: Costa Rica

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01tzh)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01tzh ns:location.location.contains ?x .
?x ns:common.topic.notable_types ns:m.01mp .
?x ns:government.governmental_jurisdiction.governing_officials ?c .
?c ns:government.government_position_held.office_holder ns:m.0102fprf . 
}