What is the frequency of the radio station with a call sign of WGNR-FM?
CREATE TABLE table_name_19 (frequency VARCHAR, call_sign VARCHAR)
SELECT frequency FROM table_name_19 WHERE call_sign = "wgnr-fm"
### Context: CREATE TABLE table_name_19 (frequency VARCHAR, call_sign VARCHAR) ### Question: What is the frequency of the radio station with a call sign of WGNR-FM? ### Answer: SELECT frequency FROM table_name_19 WHERE call_sign = "wgnr-fm"