user: Question: What seat has a vote percentage of 100.0%
Columns: ['Party', 'Party List votes', 'Vote percentage', 'Total Seats', 'Seat percentage']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Christian Democratic Union (CDU)', 389170.0, '47.2% (+21.0)', '63 (+30)', '52.1%']
SQL:

assistant: SELECT "Seat percentage" FROM "Table" WHERE "Vote percentage" = '100.0%';