user: Question: What GLF Premiership did the Magpies have?
Columns: ['Club', 'Nickname', 'Location', 'GFL Premierships', 'Years in GFL']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Barwon', 'Bulldogs', 'Belmont, Victoria', 'Nil', '1979-1989']
SQL:

assistant: SELECT "GFL Premierships" FROM "Table" WHERE "Nickname" = 'Magpies';