user: Question: What's the most melamine content that has more than 1 samples failed and produced by guangzhou jinding dairy products factory?
Columns: ['Producer', 'Product', 'Samples taken', 'Samples failed', 'Melamine content(mg/kg)']
Types: ['text', 'text', 'real', 'real', 'real']
Sample row: ['Shijiazhuang Sanlu Group', '三鹿牌嬰幼兒配方乳粉', 11.0, 11.0, 2563.0]
SQL:

assistant: SELECT MAX("Melamine content(mg/kg)") FROM "Table" WHERE "Producer" = 'guangzhou jinding dairy products factory' AND "Samples failed" > 1.0;