CREATE TABLE table_name_62 (constructor VARCHAR2, driver VARCHAR2, laps VARCHAR2, grid VARCHAR2)

who is the constructor when the laps is less than 68, the grid is more than 20 and the driver is thierry boutsen?
SELECT constructor FROM table_name_62 WHERE laps < 68 AND grid > 20 AND driver = "thierry boutsen"
SELECT "constructor" FROM "table_name_62" WHERE "driver" = "thierry boutsen" AND "grid" > 20 AND "laps" < 68