user: Question: What was date of appointment for Ergün Penbe? 
Columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Replaced by', 'Date of appointment']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Ankaraspor', 'Jürgen Röber', 'Contract cancelled', '07.12.2009', 'Önder Özen', '09.07.2010']
SQL:

assistant: SELECT "Date of appointment" FROM "Table" WHERE "Replaced by" = 'Ergün Penbe';