user: Question: What party was Achille Variati afilliated with?
Columns: ['Municipality', 'Inhabitants', 'Mayor', 'Party', 'Election']
Types: ['text', 'real', 'text', 'text', 'real']
Sample row: ['Venice', 270884.0, 'Giorgio Orsoni', 'Democratic Party', 2010.0]
SQL:

assistant: SELECT "Party" FROM "Table" WHERE "Mayor" = 'Achille Variati';