Table: grand_prix_1953
Columns: driver
constructor
laps
time_retired
grid

Question: Who is the driver when the grid is 18?
SQL: SELECT "driver" FROM grand_prix_1953 WHERE "grid" = '18'

Question: What is the time/retired when the grid is 19?
SQL: SELECT "time_retired" FROM grand_prix_1953 WHERE "grid" = '19'