user: Question: What year did Maggs Magnificent Mild win a Gold Medal in the Mild and Porter category at the SIBA South East Region Beer Competition?
Columns: ['Year', 'Beer Name', 'Prize', 'Category', 'Competition']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1995.0, 'Good Old Boy', 'Overall Winner', 'Beer of the Festival', 'CAMRA White Horse Branch Beer Festival']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Beer Name" = 'Maggs Magnificent Mild' AND "Prize" = 'Gold Medal' AND "Category" = 'Mild and Porter' AND "Competition" = 'SIBA South East Region Beer Competition';