Table: grand_prix_1971
Columns: driver
constructor
laps
time_retired
grid

Question: What's the Time/Retired of Laps of 75?
SQL: SELECT "time_retired" FROM grand_prix_1971 WHERE "laps" = 75

Question: Which Driver has Laps larger than 78, and a Time/Retired of + 1:09.4?
SQL: SELECT "driver" FROM grand_prix_1971 WHERE "laps" > 78 AND "time_retired" = '+ 1:09.4'

Question: Hows many Laps are in a Grid of 4?
SQL: SELECT COUNT("laps") FROM grand_prix_1971 WHERE "grid" = 4