What is the earliest year with less than 45 points for Yamaha team in 21st rank?
CREATE TABLE table_name_49 (
    year INTEGER,
    rank VARCHAR,
    points VARCHAR,
    team VARCHAR
)
SELECT MIN(year) FROM table_name_49 WHERE points < 45 AND team = "yamaha" AND rank = "21st"
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 earliest year with less than 45 points for Yamaha team in 21st rank? ### Input: CREATE TABLE table_name_49 (
    year INTEGER,
    rank VARCHAR,
    points VARCHAR,
    team VARCHAR
) ### Response: SELECT MIN(year) FROM table_name_49 WHERE points < 45 AND team = "yamaha" AND rank = "21st"