Database: formula_1
Question: What are the first names of the different drivers who won in position 1 as driver standing and had more than 20 points?
SQL:
SELECT DISTINCT T1.forename FROM drivers AS T1 JOIN driverstandings AS T2 ON T1.driverid = T2.driverid WHERE T2.position = 1 AND T2.wins = 1 AND T2.points > 20