SELECT COUNT("name") FROM table_203_141 WHERE "sr. no." > (SELECT "sr. no." FROM table_203_141 WHERE "name" = 'rudhra gangadharan')
before rudhra gangadharan , how many directors were before him ?
CREATE TABLE table_203_141 (
    id number,
    "sr. no." number,
    "name" text,
    "from" text,
    "till" text,
    "occupation" text
)