Table: euro_gp_1997
Columns: driver
constructor
laps
time_retired
grid

Question: Which driver had a grid of 18 with 68 laps?
SQL: SELECT "driver" FROM euro_gp_1997 WHERE "laps" = '68' AND "grid" = '18'

Question: Which driver had a grid of 18?
SQL: SELECT "driver" FROM euro_gp_1997 WHERE "grid" = '18'

Question: Which driver had a grid of 22?
SQL: SELECT "driver" FROM euro_gp_1997 WHERE "grid" = '22'