What were the revising conventions commentary with a denunciation of 21?
CREATE TABLE table_2001348_1 (
    revising_convention_s_ VARCHAR,
    denunciations__september_2011_ VARCHAR
)
SELECT revising_convention_s_ FROM table_2001348_1 WHERE denunciations__september_2011_ = 21
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 were the revising conventions commentary with a denunciation of 21? ### Input: CREATE TABLE table_2001348_1 (
    revising_convention_s_ VARCHAR,
    denunciations__september_2011_ VARCHAR
) ### Response: SELECT revising_convention_s_ FROM table_2001348_1 WHERE denunciations__september_2011_ = 21