Question: Of everyone that Kim Kardashian dated, which is a sports player, that began his career in 2004?
Answer(s):
answer: Ben Roethlisberger

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.0261x8t)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.0261x8t ns:base.popstra.celebrity.dated ?y .
?y ns:base.popstra.dated.participant ?x .
?x ns:sports.pro_athlete.sports_played_professionally ?c .
?c ns:sports.pro_sports_played.career_start "2004"^^xsd:dateTime . 
}