What is 4zr's callsign?
CREATE TABLE table_name_67 (callsign VARCHAR, on_air_id VARCHAR)
SELECT callsign FROM table_name_67 WHERE on_air_id = "4zr"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_67 (callsign VARCHAR, on_air_id VARCHAR) Question: What is 4zr's callsign? [/INST] SELECT callsign FROM table_name_67 WHERE on_air_id = "4zr" </s>