Table: t_1985_dutch_grand_prix
Columns: driver
constructor
laps
time_retired
grid

Question: What is the smallest grid for Ayrton Senna?
SQL: SELECT MIN("grid") FROM t_1985_dutch_grand_prix WHERE "driver" = 'ayrton senna'

Question: What is the Time/Retired for laps higher than 52 on a grid larger than 21?
SQL: SELECT "time_retired" FROM t_1985_dutch_grand_prix WHERE "laps" > 52 AND "grid" > 21

Question: What is the sum of laps for grid 20?
SQL: SELECT SUM("laps") FROM t_1985_dutch_grand_prix WHERE "grid" = 20

Question: What is the most laps for Ayrton Senna?
SQL: SELECT MAX("laps") FROM t_1985_dutch_grand_prix WHERE "driver" = 'ayrton senna'