What is the smallest grid with collision as the Time/Retired for pedro diniz?
CREATE TABLE table_51664 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
)
SELECT MIN("Grid") FROM table_51664 WHERE "Time/Retired" = 'collision' AND "Driver" = 'pedro diniz'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the smallest grid with collision as the Time/Retired for pedro diniz? ### Input: CREATE TABLE table_51664 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
) ### Response: SELECT MIN("Grid") FROM table_51664 WHERE "Time/Retired" = 'collision' AND "Driver" = 'pedro diniz'