CREATE TABLE table_name_54 (authority VARCHAR2, roll VARCHAR2, decile VARCHAR2, area VARCHAR2)

What authority controls the school in Levin that has a decile of 6, and a roll of 226?
SELECT authority FROM table_name_54 WHERE decile = 6 AND area = "levin" AND roll = 226
SELECT "authority" FROM "table_name_54" WHERE "area" = "levin" AND "decile" = 6 AND "roll" = 226