Name the sum of roll for morrinsville school
CREATE TABLE table_71700 (
    "Name" text,
    "Years" text,
    "Gender" text,
    "Area" text,
    "Authority" text,
    "Decile" real,
    "Roll" real
)
SELECT SUM("Roll") FROM table_71700 WHERE "Name" = 'morrinsville school'
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: Name the sum of roll for morrinsville school ### Input: CREATE TABLE table_71700 (
    "Name" text,
    "Years" text,
    "Gender" text,
    "Area" text,
    "Authority" text,
    "Decile" real,
    "Roll" real
) ### Response: SELECT SUM("Roll") FROM table_71700 WHERE "Name" = 'morrinsville school'