Table: t_1986_british_grand_prix
Columns: driver
constructor
laps
time_retired
grid

Question: what is the laps when the grid is less than 2?
SQL: SELECT "laps" FROM t_1986_british_grand_prix WHERE "grid" < 2

Question: who is the constructor when the grid is more than 23 and the driver is piercarlo ghinzani?
SQL: SELECT "constructor" FROM t_1986_british_grand_prix WHERE "grid" > 23 AND "driver" = 'piercarlo ghinzani'