what are the number of times tokyu is listed as a manufacturer on this chart ?
CREATE TABLE table_203_154 (
    id number,
    "type" text,
    "manufacturer" text,
    "numbers" text,
    "year built" number,
    "quantity built" number,
    "power (horsepower)" number,
    "max speed (km/h)" number,
    "note" text
)
SELECT COUNT(*) FROM table_203_154 WHERE "manufacturer" = 'tokyu'
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 are the number of times tokyu is listed as a manufacturer on this chart ? ### Input: CREATE TABLE table_203_154 (
    id number,
    "type" text,
    "manufacturer" text,
    "numbers" text,
    "year built" number,
    "quantity built" number,
    "power (horsepower)" number,
    "max speed (km/h)" number,
    "note" text
) ### Response: SELECT COUNT(*) FROM table_203_154 WHERE "manufacturer" = 'tokyu'