Table: euro_gp_1999
Columns: driver
constructor
laps
time_retired
grid

Question: what is the sum of laps when grid is less than 20 and johnny herbert is driving?
SQL: SELECT SUM("laps") FROM euro_gp_1999 WHERE "grid" < 20 AND "driver" = 'johnny herbert'

Question: who is the driver for the car constructed by ferrari with a time/retired of +1:06.683?
SQL: SELECT "driver" FROM euro_gp_1999 WHERE "constructor" = 'ferrari' AND "time_retired" = '+1:06.683'

Question: who is the driver when grid is 11?
SQL: SELECT "driver" FROM euro_gp_1999 WHERE "grid" = 11