user: Question: what is the identifier when the power is 22500 watts?
Columns: ['City of license', 'Identifier', 'Frequency', 'Power', 'Class', 'RECNet']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Belleville', 'CJBC-1-FM', '94.3 FM', '34950 s watt', 'B', 'Query']
SQL:

assistant: SELECT "Identifier" FROM "Table" WHERE "Power" = '22500 watts';