Table: molik_finals
Columns: date
tournament
surface
opponent_in_the_final
score

Question: What tournament has Samantha Stosur as the opponent in the final?
SQL: SELECT "tournament" FROM molik_finals WHERE "opponent_in_the_final" = 'samantha stosur'

Question: What date is the zürich, switzerland tournament?
SQL: SELECT "date" FROM molik_finals WHERE "tournament" = 'zürich, switzerland'

Question: What is the date of the Sydney, Australia tournament with a hard surface?
SQL: SELECT "date" FROM molik_finals WHERE "surface" = 'hard' AND "tournament" = 'sydney, australia'