user: Question: In what district was the successor seated August 31, 1943?
Columns: ['District', 'Vacator', 'Reason for change', 'Successor', 'Date successor seated']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Missouri 6th', 'Vacant', 'Rep. Philip A. Bennett died in previous Congress', 'Marion T. Bennett (R)', 'January 12, 1943']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "Date successor seated" = 'August 31, 1943';