give the number of representatives listed in the table .
CREATE TABLE table_203_409 (
    id number,
    "rank" number,
    "representative" text,
    "party" text,
    "district" text,
    "seniority date" text,
    "notes" text
)
SELECT COUNT("representative") FROM table_203_409
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: give the number of representatives listed in the table . ### Input: CREATE TABLE table_203_409 (
    id number,
    "rank" number,
    "representative" text,
    "party" text,
    "district" text,
    "seniority date" text,
    "notes" text
) ### Response: SELECT COUNT("representative") FROM table_203_409