user: Question: What is Party, when Left Office is "23 April 2005", when Portfolio is "Minister of Reforms and Devolutions"?
Columns: ['Portfolio', 'Minister', 'Took office', 'Left office', 'Party']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Minister European Affairs', 'Rocco Buttiglione', '11 June 2001', '23 April 2005', 'UDC']
SQL:

assistant: SELECT "Party" FROM "Table" WHERE "Left office" = '23 April 2005' AND "Portfolio" = 'Minister of Reforms and Devolutions';