Table: t_1968_british_grand_prix
Columns: driver
constructor
laps
time_retired
grid

Question: When laps are less than 80 and Bruce mclaren is the driver, what is the grid?
SQL: SELECT "grid" FROM t_1968_british_grand_prix WHERE "laps" < 80 AND "driver" = 'bruce mclaren'

Question: What driver has a grid greater than 19?
SQL: SELECT "driver" FROM t_1968_british_grand_prix WHERE "grid" > 19

Question: When the driver richard attwood has a constructor of brm, what is the number of laps?
SQL: SELECT "laps" FROM t_1968_british_grand_prix WHERE "constructor" = 'brm' AND "driver" = 'richard attwood'