user: Question: What region has 57 vehicles?
Columns: ['Region', 'Location', 'From', 'Depots (12.09)', 'Routes (12.09)', 'Vehicles (12.09)']
Types: ['text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['Altai krai', 'Barnaul', '19 Oct 1973', 1.0, 5.0, 57.0]
SQL:

assistant: SELECT "Region" FROM "Table" WHERE "Vehicles (12.09)" = 57.0;