Name the outgoing manager for mantova
{'header': ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Replaced by', 'Date of appointment'], 'page_title': '', 'page_id': '', 'types': ['text', 'text', 'text', 'text', 'text', 'text'], 'id': '1-17275810-7', 'section_title': '', 'caption': '', 'rows': [['Rimini', 'Leonardo Acori', 'Mutual consent', '1 Cannot handle non-empty timestamp argument! 2008', 'Elvio Selighini', '3 Cannot handle non-empty timestamp argument! 2008'], ['Frosinone', 'Alberto Cavasin', 'Mutual consent', '5 Cannot handle non-empty timestamp argument! 2008', 'Piero Braglia', '6 Cannot handle non-empty timestamp argument! 2008'], ['Avellino', 'Giuseppe Incocciati', 'Sacked', '7 Cannot handle non-empty timestamp argument! 2008', 'Salvatore Campilongo', '7 Cannot handle non-empty timestamp argument! 2008'], ['Ascoli', 'Vincenzo Chiarenza', 'Sacked', '7 Cannot handle non-empty timestamp argument! 2008', 'Franco Colomba', '7 Cannot handle non-empty timestamp argument! 2008'], ['Salernitana', 'Fabrizio Castori', 'Sacked', '6 Cannot handle non-empty timestamp argument! 2008', 'Bortolo Mutti', '7 Cannot handle non-empty timestamp argument! 2008'], ['Mantova', 'Alessandro Costacurta', 'Resigned', '9 Cannot handle non-empty timestamp argument! 2009', 'Mario Somma', '9 Cannot handle non-empty timestamp argument! 2009'], ['Salernitana', 'Fabrizio Castori', 'Sacked', '4 Cannot handle non-empty timestamp argument! 2009', 'Fabio Brini', '4 Cannot handle non-empty timestamp argument! 2009']], 'name': 'table_17275810_7'}