user: Question: Which round has 4 clubs involved?
Columns: ['Round', 'Clubs remaining', 'Clubs involved', 'Winners from previous round', 'New entries this round', 'Leagues entering at this round']
Types: ['text', 'real', 'real', 'text', 'text', 'text']
Sample row: ['First round', 156.0, 86.0, 'none', '86', 'TFF Third League & Turkish Regional Amateur League']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Clubs involved" = 4.0;