user: Question: What Gender are the schools that have a Roll of 135?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Amisfield School', '1–8', 'Coed', 'Tokoroa', 'State', 4.0, '252']
SQL:

assistant: SELECT "Gender" FROM "Table" WHERE "Roll" = '135';