user: Question: What is the total amount of decile with the authority of state around the pokuru school and a roll smaller than 109?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Cambridge East School', '1–6', 'Coed', 'Cambridge', 'State', 9.0, 364.0]
SQL:

assistant: SELECT SUM("Decile") FROM "Table" WHERE "Authority" = 'state' AND "Name" = 'pokuru school' AND "Roll" < 109.0;