How many years is kindergarten legally requited in Zug?
CREATE TABLE table_22252 (
    "Canton" text,
    "Years of Kindergarten" real,
    "Years of Kindergarten provided" text,
    "Years of Kindergarten legally required" text,
    "Length of Primary School" real,
    "Length of mandatory Secondary School" real,
    "Separate Secondary Schools?" text,
    "Cooperative Secondary Schools?" text,
    "Integrated Secondary Schools?" text
)
SELECT "Years of Kindergarten legally required" FROM table_22252 WHERE "Canton" = 'Zug'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many years is kindergarten legally requited in Zug? ### Input: CREATE TABLE table_22252 (
    "Canton" text,
    "Years of Kindergarten" real,
    "Years of Kindergarten provided" text,
    "Years of Kindergarten legally required" text,
    "Length of Primary School" real,
    "Length of mandatory Secondary School" real,
    "Separate Secondary Schools?" text,
    "Cooperative Secondary Schools?" text,
    "Integrated Secondary Schools?" text
) ### Response: SELECT "Years of Kindergarten legally required" FROM table_22252 WHERE "Canton" = 'Zug'