what is the difference of weight between the maria bell and the carolus bell ?
CREATE TABLE table_203_283 (
    id number,
    "#" number,
    "name" text,
    "strike tone\n(st-1/16)" text,
    "weight\n(kg)" number,
    "diameter\n(mm)" number,
    "inscription" text
)
SELECT (SELECT "weight\n(kg)" FROM table_203_283 WHERE "name" = 'maria') - (SELECT "weight\n(kg)" FROM table_203_283 WHERE "name" = 'carolus')
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: what is the difference of weight between the maria bell and the carolus bell ? ### Input: CREATE TABLE table_203_283 (
    id number,
    "#" number,
    "name" text,
    "strike tone\n(st-1/16)" text,
    "weight\n(kg)" number,
    "diameter\n(mm)" number,
    "inscription" text
) ### Response: SELECT (SELECT "weight\n(kg)" FROM table_203_283 WHERE "name" = 'maria') - (SELECT "weight\n(kg)" FROM table_203_283 WHERE "name" = 'carolus')