user: Question: What was the departure time of the train that arrived at 21.26?
Columns: ['Departure', 'Going to', 'Calling at', 'Arrival', 'Operator']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['07.10', 'Skegness', 'Wainfleet, Skegness', '07.28', 'GNR']
SQL:

assistant: SELECT "Departure" FROM "Table" WHERE "Arrival" = '21.26';