user: Question: What day did Alex Best exit?
Columns: ['Celebrity', 'Famous for', 'Entered', 'Exited', 'Finished']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Kerry Katona', 'Singer in Atomic Kitten', 'Day 1', 'Day 16', '1st']
SQL:

assistant: SELECT "Exited" FROM "Table" WHERE "Celebrity" = 'Alex Best';