user: Question: What is the roll number of orautoha school in raetihi, which has a decile smaller than 8?
Columns: ['Name', 'Years', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Kaitieke School', '1–8', 'Kaitieke', 'State', 8.0, 11.0]
SQL:

assistant: SELECT "Roll" FROM "Table" WHERE "Area" = 'raetihi' AND "Name" = 'orautoha school' AND "Decile" < 8.0;