user: Question: Which class has an identifier of CBUA-FM?
Columns: ['City of license', 'Identifier', 'Frequency', 'Power', 'Class', 'RECNet']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Beaver Creek', 'CBDM', '690 AM', '40 s watt', 'LP', 'Query']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Identifier" = 'CBUA-FM';