When samai amari is the asian rider classification how many asian team classifications are there?
CREATE TABLE table_21573750_2 (
    asian_team_classification VARCHAR,
    asian_rider_classification VARCHAR
)
SELECT COUNT(asian_team_classification) FROM table_21573750_2 WHERE asian_rider_classification = "Samai Amari"
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: When samai amari is the asian rider classification how many asian team classifications are there? ### Input: CREATE TABLE table_21573750_2 (
    asian_team_classification VARCHAR,
    asian_rider_classification VARCHAR
) ### Response: SELECT COUNT(asian_team_classification) FROM table_21573750_2 WHERE asian_rider_classification = "Samai Amari"