Table: iroc_21
Columns: position
driver
points
winnings
series

Question: Which drivers won $40,000 in the NASCAR Winston Cup?
SQL: SELECT "driver" FROM iroc_21 WHERE "series" = 'NASCAR Winston Cup' AND "winnings" = '$40,000'

Question: What series is at the position 7?
SQL: SELECT "series" FROM iroc_21 WHERE "position" = 7

Question: In what series did the driver get 30 points?
SQL: SELECT "series" FROM iroc_21 WHERE "points" = 30

Question: How much did Dale Jarrett win?
SQL: SELECT "winnings" FROM iroc_21 WHERE "driver" = 'Dale Jarrett'