Name the total number of ERP W when the call sign is w217bf
CREATE TABLE table_name_8 (
    erp_w VARCHAR,
    call_sign VARCHAR
)
SELECT COUNT(erp_w) FROM table_name_8 WHERE call_sign = "w217bf"
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 ERP W when the call sign is w217bf ### Input: CREATE TABLE table_name_8 (
    erp_w VARCHAR,
    call_sign VARCHAR
) ### Response: SELECT COUNT(erp_w) FROM table_name_8 WHERE call_sign = "w217bf"