user: Question: When the final position/round is Group Stage, when is the last match?
Columns: ['Competition', 'Current position / round', 'Final position / round', 'First match', 'Last match']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Scottish Premier League', '—', '2nd', '4 August', '22 May']
SQL:

assistant: SELECT "Last match" FROM "Table" WHERE "Final position / round" = 'Group Stage';