user: Question: What is the field stability of cyanogen bromide that has an effectiveness of 9?
Columns: ['Agent', 'Melting / boiling point', 'Effectiveness as blood agent', 'Persistence, open area', 'Persistence, enclosed area', 'Field stability', 'Storage stability', 'Toxicity as blood agent']
Types: ['text', 'text', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Hydrogen cyanide', '-13 / 26 °C', 10.0, 2.0, 9.0, 10.0, 8.0, 10.0]
SQL:

assistant: SELECT "Field stability" FROM "Table" WHERE "Agent" = 'cyanogen bromide' AND "Effectiveness as blood agent" > 9.0;