user: Question: Name the replaced by for August 9 
Columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Position in table', 'Replaced by', 'Date of appointment']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Vasco da Gama', 'Vágner Mancini', 'Sacked', 'March 25', 'Pre-season', 'Gaúcho (caretaker)', 'March 26']
SQL:

assistant: SELECT "Replaced by" FROM "Table" WHERE "Date of vacancy" = 'August 9' AND "Date of appointment" = 'August 9';