user: Question: Which Class has a City of license of Garden City, Kansas?
Columns: ['Call sign', 'Frequency', 'City of license', 'Watts', 'Class']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['KANZ', '91.1 FM', 'Garden City, Kansas', 100000.0, 'C1']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "City of license" = 'Garden City, Kansas';