user: Question: What is the lowest 12-inch when the 13.5-inch/1250lb was 0, and the ship is Seydlitz?
Columns: ['Ship', '13.5-inch/1400lb', '13.5-inch/1250lb', '12-inch', 'Total']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Lützow', 0.0, 2.0, 8.0, 10.0]
SQL:

assistant: SELECT MIN("12-inch") FROM "Table" WHERE "13.5-inch/1250lb" = 0.0 AND "Ship" = 'Seydlitz';