Position of fullback has what highest weight?
CREATE TABLE table_34217 (
    "Player" text,
    "Position" text,
    "Games started" text,
    "Hometown" text,
    "Height" text,
    "Weight" real,
    "Class" text,
    "Previous experience" text
)
SELECT MAX("Weight") FROM table_34217 WHERE "Position" = 'fullback'
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: Position of fullback has what highest weight? ### Input: CREATE TABLE table_34217 (
    "Player" text,
    "Position" text,
    "Games started" text,
    "Hometown" text,
    "Height" text,
    "Weight" real,
    "Class" text,
    "Previous experience" text
) ### Response: SELECT MAX("Weight") FROM table_34217 WHERE "Position" = 'fullback'