Which call sign has a frequency of FM 105.3?
CREATE TABLE table_name_81 (call_sign VARCHAR, frequency VARCHAR)
SELECT call_sign FROM table_name_81 WHERE frequency = "fm 105.3"
### Context: CREATE TABLE table_name_81 (call_sign VARCHAR, frequency VARCHAR) ### Question: Which call sign has a frequency of FM 105.3? ### Answer: SELECT call_sign FROM table_name_81 WHERE frequency = "fm 105.3"