Question: What Louisiana State Senator ended his government position after 1801?
Answer(s):
answer: Judah P. Benjamin
answer: Edward Douglass White
answer: Alexandre Mouton
answer: Jeremiah B. Howell
answer: John Breaux
answer: Russell B. Long
answer: Robert C. Nicholas
answer: William C. C. Claiborne
answer: Alexander Barrow
answer: Josiah S. Johnston
answer: Edward Livingston
answer: Allan B. Magruder
answer: Pierre Soulé
answer: Charles Dominique Joseph Bouligny
answer: George A. Waggaman
answer: Alexander Porter
answer: David Vitter
answer: James Brown
answer: Thomas Posey
answer: Henry Johnson
answer: Eligius Fromentin
answer: John Slidell
answer: Huey Long
answer: Charles Magill Conrad
answer: Jean Noel Destréhan

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.04ly1)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.04ly1 ns:government.political_district.representatives ?y .
?y ns:government.government_position_held.office_holder ?x .
?y ns:government.government_position_held.office_position_or_title ns:m.02_7l8y .
?x ns:government.politician.government_positions_held ?c .
?c ns:government.government_position_held.to ?num .
FILTER (?num > "1801"^^xsd:dateTime) . 
}