user: ### NOW ANSWER:
Question: What identifier has 90.3 as the frequency?
Columns: ['City of license', 'Identifier', 'Frequency', 'Power', 'Class', 'RECNet']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Blind River', 'CBON-6', '1010 AM', '40 s watt', 'LP', 'Query']
SQL:

assistant: SELECT "Identifier" FROM "Table" WHERE "Frequency" = '90.3';