user: Question: Which timeslot did episode no. 15 hold?
Columns: ['No.', 'Episode', 'Air Date', 'Timeslot', 'Rating', 'Share', '18–49 (Rating/Share)', 'Viewers (m)', 'Rank (#)']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: [1.0, '" Pilot "', '2007-09-25 September 25, 2007', 'Tuesday 9/8c', '2.1', 3.0, '1.5/3', '3.28', '85']
SQL:

assistant: SELECT "Timeslot" FROM "Table" WHERE "No." = 15.0;