Table: grand_prix_1986_2
Columns: driver
constructor
laps
time_retired
grid

Question: How many laps for grid 12?
SQL: SELECT "laps" FROM grand_prix_1986_2 WHERE "grid" = 12

Question: Who built the 21 grid car that retired due to suspension?
SQL: SELECT "constructor" FROM grand_prix_1986_2 WHERE "grid" > 21 AND "time_retired" = 'suspension'