What's the frequency when the identifier is cbf-fm-9?
CREATE TABLE table_name_47 (frequency VARCHAR, identifier VARCHAR)
SELECT frequency FROM table_name_47 WHERE identifier = "cbf-fm-9"
### Context: CREATE TABLE table_name_47 (frequency VARCHAR, identifier VARCHAR) ### Question: What's the frequency when the identifier is cbf-fm-9? ### Answer: SELECT frequency FROM table_name_47 WHERE identifier = "cbf-fm-9"