user: Question: What years are listed for the Tahunanui School with an authority of State?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Auckland Point School', '1–8', 'Coed', 'Nelson', 'State', 5.0]
SQL:

assistant: SELECT "Years" FROM "Table" WHERE "Authority" = 'State' AND "Name" = 'Tahunanui School';