user: Question: Which Bullet diameter has a Neck diameter of 12.17 (.479)?
Columns: ['Name', 'Case type', 'Bullet diameter', 'Neck diameter', 'Base diameter', 'Rim diameter', 'Case length', 'Cartridge length']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['.44-40 Winchester', 'rimmed bottleneck', '10.85 (.427)', '11.25 (.443)', '11.96 (.471)', '13.33 (.525)', '33.27 (1.31)', '39.37 (1.55)']
SQL:

assistant: SELECT "Bullet diameter" FROM "Table" WHERE "Neck diameter" = '12.17 (.479)';