how many stadiums are located in belfast ?
CREATE TABLE table_203_420 (
    id number,
    "#" number,
    "stadium" text,
    "capacity" number,
    "city" text,
    "home team" text
)
SELECT COUNT("stadium") FROM table_203_420 WHERE "city" = 'belfast'
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 stadiums are located in belfast ? ### Input: CREATE TABLE table_203_420 (
    id number,
    "#" number,
    "stadium" text,
    "capacity" number,
    "city" text,
    "home team" text
) ### Response: SELECT COUNT("stadium") FROM table_203_420 WHERE "city" = 'belfast'