user: Question: what is the Identifier with 94.9 FM Frequency
Columns: ['City of license', 'Identifier', 'Frequency', 'Power', 'Class', 'RECNet']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Fairview', 'CKYL-FM-3', '88.5 FM', '820 s watt', 'A', 'Query']
SQL:

assistant: SELECT "Identifier" FROM "Table" WHERE "Frequency" = '94.9 FM';