Question: Who was a president in Venezuela at some point but died before Dec 24, 2009?
Answer(s):
answer: Luis Herrera Campins

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.07ylj)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.07ylj ns:government.governmental_jurisdiction.governing_officials ?y .
?y ns:government.government_position_held.office_holder ?x .
?y ns:government.government_position_held.basic_title ns:m.060c4 .
?x ns:people.deceased_person.date_of_death ?num .
FILTER (?num < "2009-12-24"^^xsd:dateTime) . 
}