Question: Which year prior to 2003 did Steve Nash play for the Mavericks?
Answer(s):
answer: 2001–02 NBA season
answer: 1999–2000 NBA season
answer: 1998–99 NBA season
answer: 2000–01 NBA season

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ns:m.01yqrk)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
ns:m.01yqrk ns:basketball.basketball_player.player_statistics ?y .
?y ns:basketball.basketball_player_stats.season ?x .
?y ns:basketball.basketball_player_stats.team ns:m.0jmcv .
?x ns:time.event.end_date ?num .
FILTER (?num < "2003"^^xsd:dateTime) . 
}