What is the lowest laps that has a manufacturer of yamaha, and a time/retired of +1:08.312, and a grid less than 20?
CREATE TABLE table_45134 (
    "Rider" text,
    "Manufacturer" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
)
SELECT MIN("Laps") FROM table_45134 WHERE "Manufacturer" = 'yamaha' AND "Time/Retired" = '+1:08.312' AND "Grid" < '20'
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 lowest laps that has a manufacturer of yamaha, and a time/retired of +1:08.312, and a grid less than 20? ### Input: CREATE TABLE table_45134 (
    "Rider" text,
    "Manufacturer" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
) ### Response: SELECT MIN("Laps") FROM table_45134 WHERE "Manufacturer" = 'yamaha' AND "Time/Retired" = '+1:08.312' AND "Grid" < '20'