Question: What country that's part of South America has had a religious organization leadership since 28 February 1998?
Answer(s):
answer: Argentina

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.06n3y)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.06n3y ns:location.location.contains ?x .
?x ns:common.topic.notable_types ns:m.01mp .
?x ns:religion.religious_leadership_jurisdiction.leader ?c .
?c ns:religion.religious_organization_leadership.start_date "1998-02-28"^^xsd:dateTime . 
}