Table: t_1972_german_grand_prix
Columns: driver
constructor
laps
time_retired
grid

Question: What is the Time/Retired when the grid is larger than 9 and Rolf Stommelen is the driver?
SQL: SELECT "time_retired" FROM t_1972_german_grand_prix WHERE "grid" > 9 AND "driver" = 'rolf stommelen'

Question: What is the highest number of laps when the Time/Retired is differential?
SQL: SELECT MAX("laps") FROM t_1972_german_grand_prix WHERE "time_retired" = 'differential'

Question: Who is the driver when the laps are smaller than 14, the grid is smaller than 16, and the Time/retired is not classified?
SQL: SELECT "driver" FROM t_1972_german_grand_prix WHERE "laps" < 14 AND "grid" < 16 AND "time_retired" = 'not classified'

Question: What is the average grid when the laps are smaller than 14 and Reine Wisell is the driver?
SQL: SELECT AVG("grid") FROM t_1972_german_grand_prix WHERE "laps" < 14 AND "driver" = 'reine wisell'