Question: Who is the Arizona state senator who started in government after 01-03-1953?
Answer(s):
answer: Ernest McFarland
answer: John McCain
answer: Barry Goldwater
answer: Jon Kyl
answer: Dennis DeConcini
answer: Paul Fannin
answer: Jeff Flake

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0vmt)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0vmt 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.from ?num .
FILTER (?num > "1953-01-03"^^xsd:dateTime) . 
}