CREATE TABLE table_name_12 (roll INT, authority VARCHAR, name VARCHAR)

What is the biggest roll number of Sylvia Park School, which has a state authority?
SELECT MAX(roll) FROM table_name_12 WHERE authority = "state" AND name = "sylvia park school"
SELECT MAX("roll") FROM "table_name_12" WHERE "authority" = "state" AND "name" = "sylvia park school"