user: Question: What is on at 8:30 when eTalk is on at 7:00 on that channel?
Columns: ['7:00', '7:30', '8:00', '8:30', '9:00', '9:30', '10:00']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Coronation Street', 'Fashion File', "Dragons' Den", "Dragons' Den", 'Intelligence', 'Intelligence', 'The National']
SQL:

assistant: SELECT "8:30" FROM "Table" WHERE "7:00" = 'eTalk';