user: Question: Which Authority has a Decile smaller than 6, and an Area of Opoutere?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Colville School', '1–8', 'Coed', 'Colville', 'State', 4.0, 32.0]
SQL:

assistant: SELECT "Authority" FROM "Table" WHERE "Decile" < 6.0 AND "Area" = 'Opoutere';