CREATE TABLE table_1831309_1 (years_of_kindergarten VARCHAR, canton VARCHAR)

How many years of kindergarten is provided in Ticino?
SELECT years_of_kindergarten AS provided FROM table_1831309_1 WHERE canton = "Ticino"
SELECT "years_of_kindergarten" AS "provided" FROM "table_1831309_1" WHERE "Ticino" = "canton"