user: Question: What city of license has a value of K293BG for its call sign?
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'Class', 'FCC info']
Types: ['text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['K217EZ', 91.3, 'Coachella, California', 10.0, 'D', 'FCC']
SQL:

assistant: SELECT "City of license" FROM "Table" WHERE "Call sign" = 'K293BG';