Table: melaine_walker_1998
Columns: year
tournament
venue
result
event

Question: What is the venue of the competition with a result of 1st before 2009?
SQL: SELECT "venue" FROM melaine_walker_1998 WHERE "year" < 2009 AND "result" = '1st'

Question: What was the venue of the 400 M Hurdles for the Olympic Games?
SQL: SELECT "venue" FROM melaine_walker_1998 WHERE "event" = '400 m hurdles' AND "tournament" = 'olympic games'

Question: What was the earliest year for the 400 M Hurdles in Santiago, Chile?
SQL: SELECT MIN("year") FROM melaine_walker_1998 WHERE "venue" = 'santiago, chile' AND "event" = '400 m hurdles'