Name the total number of immunity for cycle number of 13
CREATE TABLE table_16976547_2 (
    immunity VARCHAR,
    cycle_no VARCHAR
)
SELECT COUNT(immunity) FROM table_16976547_2 WHERE cycle_no = "13"
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: Name the total number of immunity for cycle number of 13 ### Input: CREATE TABLE table_16976547_2 (
    immunity VARCHAR,
    cycle_no VARCHAR
) ### Response: SELECT COUNT(immunity) FROM table_16976547_2 WHERE cycle_no = "13"