Table: australian_touring_car_1999
Columns: driver
race_1
race_2
race_3
race_4

Question: What's the value for race 4 when race 1 is dsq?
SQL: SELECT "race_4" FROM australian_touring_car_1999 WHERE "race_1" = 'dsq'

Question: What's the value for race 4 when race 3 is dns and race 2 is 27?
SQL: SELECT "race_4" FROM australian_touring_car_1999 WHERE "race_3" = 'dns' AND "race_2" = '27'

Question: What's the value for race 4 for driver kevin heffernan?
SQL: SELECT "race_4" FROM australian_touring_car_1999 WHERE "driver" = 'kevin heffernan'