user: Question: what is the frequency when the city of license is Belleville?
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 "Frequency" FROM "Table" WHERE "City of license" = 'Belleville';