Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_134729_3 (format VARCHAR, call_sign VARCHAR)

### Question ###
What station has the call number K213cl

### Accurate SQL ###

SELECT format FROM table_134729_3 WHERE call_sign = "K213CL"